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The context for this report.......................................................................2
Policy 2
Systemic reform ............................................................................................................2
Standards ......................................................................................................................3
Assessment....................................................................................................................3
Federal funding..................................................................................................................3
Demographics ....................................................................................................................4
Elementary and secondary ...........................................................................................5
Postsecondary...............................................................................................................7

The organization of the report.................................................................7
References ...................................................................................................9

Chapter 1


2 I N D I C AT O R S O F S C I E N C E A N D M AT H E M AT I C S E D U C AT I O N 1 9 9 5
T he Senate 1991 Appropriations Bill (HR 5158)mandated that the National Science Foundation (NSF) produce this biennial report
to evaluate the health of science and mathematics education.

1 This report is intended to update policy makers,

educators, and the general public on the status of students
and the system that serves them. It uses selected
indicators of the system to provide a look at how science
and mathematics education has changed in the past few
years and how it is changing today. Furthermore, the
report uses a number of indicators that represent important
elements of the efforts of systemic reform of mathematics
and science education.
The data and findings presented here about science
and mathematics education are extracted from existing
studies and surveys of education. In some cases, chapter
authors have conducted secondary analyses of these existing
data, but no new information has been collected from
schools, students, or teachers specifically for purposes of
writing this report. The report highlights information
regarding relationships between changes in student
achievement and changes in classroom conditions.
Although the picture that emerges is detailed, it is far
from complete because survey data for many important
topics of concern to science and mathematics educators
are not available. Therefore, a secondary purpose of this
volume is to evaluate the condition of current indicators
as descriptors of science and mathematics education from
kindergarten through the end of the collegiate experience
and to identify new directions to be pursued.
Two themes are central to the indicators in this volume—
excellence and equity. Excellence means the
extent to which high standards of learning are attained;
equity means the extent to which these standards are
applied to all groups. Excellence and equity are the foremost
goals of the educational system— the bottom line of
the system’s health.

The Context for this Report
The changes in the educational system described in
this volume should be examined within the context of
major events in the country that affect student performance
in elementary and secondary schools and the scientific
literacy of college graduates. This section provides
a summary of some of the recent events in policy, funding,
and demographics that the authors considered as

they selected indicators for this volume. These events all
affect interpretation of the selected indicators.

Policy
In response to mounting evidence from national and
international studies that not all students in the U.S.
educational system perform well in science and mathematics,
educators and policy makers have placed a new
emphasis on the
promotion of excellence and equity for
all U.S. students. (See Chapter 2.)
One initiative to deal with excellence and equity
issues was the creation of a set of National Education
Goals to be achieved by the year 2000. One of these
goals stresses the importance of science and mathematics
education by challenging school systems to make U.S.
students’ science and mathematics achievement first in
the world.
Another initiative has been to implement systemic
reform efforts, rather than piecemeal projects, to unify
policies of reform. For example, standards have been
developed for science and mathematics education to provide
clear goals for students, teachers, and administrators
in each subject area. (For more information on science
and mathematics standards, see Chapter 3.) Also, new
assessment strategies have been created to measure the
outcome of new instructional methods. This volume provides
an examination of the extent to which these reform
efforts have been adopted by educators throughout the
United States.

Systemic Reform
Systemic reform is an approach to educational change
based on the premise that achieving excellence and equity
will require more than piecemeal attacks on the educational
system. Three elements are central to systemic reform
(O’Day & Smith, 1993):
u high standards for learning expected from all students;

u alignment among the parts of the educational system;
and
u a change in the governance of education, which

includes greater school site flexibility and control over
resources and strategies of curriculum implementation.
Systemic reform efforts include more, however, than
just a vision of change in classroom instruction. They
u involve the community and the public in promoting

change by encouraging partnerships among the sectors
of education institutions and among parents, businesses,
and the community to develop goals for students;

Introduction


I N T R O D U C T I O N 3
u offer an enhanced role for what has been called “informal
science” learning experiences— museums, parks,
and radio and television, etc.— in improving the educational
system;
u give professional development enhanced prominence,

with the idea that such development is important for
all actors in the educational enterprise; and
u view the elementary and secondary system as integrally

related to the postsecondary system; both community
colleges and 4-year institutions are involved.
Systemic reform efforts emphasize an alignment among
parts, with consistent and coherent policies, instructional
practices, and assessments. For instance, instruction in
elementary grades should be articulated with that of secondary
grades, and instruction in elementary and secondary
schools should prepare students to succeed both
in the postsecondary education environment and as new
entrants to the workforce.
The vision that forms the foundation for systemic
change forces educators to expand the definition of
excellence. It considers new components, as well as the
extent of alignment of the components toward a common
goal. Many of the necessary measurements of alignment
are not currently available. Those that could be identified
are shown in this volume, especially
in Chapter 3.
Further development of appropriate indicators must be
continued to improve measurements of the conditions
that affect the health of the entire school system.

Standards
Standards for teachers and students that were developed
by national professional societies play a pivotal role
in systemic reform efforts. Indeed, the description of
instruction and learning portrayed in both the science
and mathematics standards is one that is at the heart of
systemic change efforts.
The National Research Council, representing the science
community, is developing science standards, building
on the American Association for the Advancement
of Science’s Project 2061 and the National Science
Teachers Association’s The Content Core. The National
Council for Teachers of Mathematics developed standards
that were published in 1989, 1991, and 1995. Both sets of
standards call for changes in teaching methods, teacher
preparation, the learning environment, and the system’s
expectations of all students.
These standards are not merely a restatement of the
status quo. They stress high levels of science and mathematics
competency. They call for a different kind of
instruction, emphasizing depth of understanding over
breadth of coverage and instruction to promote problem
solving. In addition, the role of the teacher becomes one
of coach or model— with students expected to engage in

hands-on, inquiry-based learning— rather than purveyor
of knowledge. The principles within the standards are
widely accepted by leaders of the education associations
to provide a path to excellence.

Assessment
Assessment is a tool that not only measures, but also
drives, instruction. As such, educators consider it a critical
part of the teaching and learning cycle. The types of
assessment used in schools throughout the country have
begun to change in recent years. Experiments and
research are underway to develop new testing strategies
that require more problem solving and active engagement
on the part of the students. This new generation of tests
is expected to contribute to a more demanding educational
system in which all students are expected to be
competent in solving problems as well as knowing facts.

Federal Funding
One of NSF’s missions is to provide research, guidance,
and support for science and mathematics education in the
United States. NSF provides funds to support graduate
and undergraduate students in specific science and engineering
fields, and primary responsibility for educational
programs at NSF is vested in the Directorate for
Education and Human Resources (EHR). Since the
1980s, EHR has grown rapidly, largely propelled by
increases in programs for elementary and secondary education.
Although EHR spent only 22 percent of its budget
on elementary and secondary education programs in 1980,
it expended about 57 percent of its budget on these programs
in 1994. (See figure 1-1 and appendix table 1-1.) A

The science and mathematics
standards are not merely a
restatement of the status quo.
They call for a different kind of
instruction, emphasizing depth of
understanding over breadth of
coverage and instruction to
promote problem solving.


4 I N D I C AT O R S O F S C I E N C E A N D M AT H E M AT I C S E D U C AT I O N 1 9 9 5
large proportion of these funds financed systemic
approaches to increase the alignment of projects within a
state or city to achieve a more unified policy and structure
for elementary and secondary education.
Although Federal funding is a small portion of the
state and local government expenditures for science and
mathematics education, changes in Federal funding may
provide useful indicators of changes in national priorities.
NSF’s financial contribution to education represents
about one-fourth of the total Federal investment in science
and
mathematics education. Other funding sources
are the departments of Education, Health and Human
Services, Defense, Agriculture, Commerce, Energy, and
Interior; the National Aeronautics and Space
Administration; the Smithsonian Institution; and the
Environmental Protection Agency. (See figure 1-2 and
appendix table 1-2.)

Demographics
Even as educators have continued to search for new
ways to enhance excellence and equity during the past 2
decades, the demographic context of the educational system
has changed. Several of the changes that occurred in
the past 2 decades are ones that directly influence performance
of U.S. students. Since most of the indicators in
this volume are averages of a diverse population distributed
over 50 states, they reflect important trends, such as
changes in immigration patterns; however, because some

F I G U R E 1 –2
Budget obligations of 11 Federal agencies
for science and mathematics education: 1994

1 Other Federal agencies include the departments of Agriculture, Commerce, Energy,
Interior; Smithsonian Institution; National Aeronautics and Space Administration; and Environmental
Protection Agency.
NOTES: Because of definitional changes, these figures may not be compatible with
previous analyses of this topic. Agency figures may be different as a result of evolving priorities for uses of
funding. The figures reflect appropriated amounts.
SOURCE: NSTC-CET Budget Working Group. (1995). [Budget figures from departmental
budget offices]. Unpublished tabulations.
See appendix table 1-2.

Indicators of Science and Mathematics Education 1995

Kindergarten to 12th Undergraduate 4-year

0

100

200

300

400

500

600

700

800

Dollars

(in

millions)

771

426

National Science
Foundation

Department of Education

Dept. of Health &
Human Services

Department of Defense

Other seven agencies 1

1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994

0

50

100

150

200

250

300

350

Dollars

(in

millions)

Fiscal year

K-12
Undergraduate
Graduate

Informal

F I G U R E 1 –1
Funding for sectors of education by the NSF Directorate for Education and Human Resources (EHR): 1980 to 1994

SOURCES: National Science Foundation. (1992). EHR Directory of awards: Fiscal year 1990 (NSF 92-75). Washington, DC: NSF; National Science Foundation. (1994). [Budget figures]. Unpublished tabulations.
See appendix table 1– 1.


I N T R O D U C T I O N 5
demographic changes occur slowly, they have limited
influence on education indicators.

Elementary and Secondary
Between 1970 and 1985, the size of the elementary
and secondary population declined. In 1985, it began
increasing again. During this period, racial and ethnic
diversity increased slightly within the elementary and
secondary school population. By 1993, the white population
was 16 percent smaller than it had been in 1970.
The black population was about the same size as in 1970,
and the population of other races, mostly Asian, grew.
The Hispanic population increased by 2 million students,
or about two-thirds, between 1975— when it was
first measured— and 1993, to about 12 percent of the
elementary and secondary population. (See
figure 1-3
and appendix table 1-3.)
Corresponding to the
increase in the Hispanic population
was an increase in the number of children who did
not speak English in the home. (See figure 1-4 and

appendix table 1-4.) Between 1980 and 1990, the number
of children who spoke a language other than English
at home increased from 4.5 million to 6.3 million, or
from 10 percent to 14 percent of all children. In 1990,
just under 1 million children, about 2 percent of all children,
reported that they did not speak English well or at
all. A higher percentage of children who spoke a language
other than English at home reported to the Census
Bureau that they speak English very well. However, this
change in the number of children who normally speak a
language other than English at home was not large
enough to have any dramatic effect on the indicators of
student performance presented in this volume.
Overall, elementary and secondary students of all races
and ethnic origins were more likely in 1993 than in previous
years to have parents with higher education levels.
(See figure 1-5 and appendix table 1-5.) Between 1970 and
1993, the proportion of parents who had received at least
some college education increased from 25 percent to 49
percent. However, in 1993, only 37 percent of black and

1970 1975 1980 1985 1990 1993

0

10

20

30

40

50

Number

of

students

(in

millions)White

Black
Hispanic

NOTES: Data not available for Hispanics before 1975. Persons of Hispanic origin may be
of any race.
SOURCES: U.S. Bureau of the Census. (1990). School enrollment– social and economic
characteristics of students: 1989
(Current Population Reports, Population Characteristics Series
P-20, No. 443). Washington, DC: U.S. Government Printing Office; U.S. Bureau of the Census.
(1991). School enrollment– social and economic characteristics of students: October 1990 (Current
Population Reports, Population Characteristics Series P-20, No. 460). Washington, DC: U.S.
Government Printing Office; U.S. Bureau of the Census. (1994). School enrollment– social and
economic characteristics of students: October 1993
(Current Population Reports, Current
Population series, P-20, No. 479). Washington, DC: U.S. Government Printing Office.
See appendix table 1– 3.

F I G U R E 1 –3
Number and percent of students enrolled in
grades 1– 12, by race or ethnic origin: 1970 to 1993

1970 1975 1980 1985 1990 1993

0

20

40

60

80

100

Percent

of

students

White

Black
Hispanic

1980 1990

0

10

20

30

40

50

Number

of

students

(in

millions)

47

4.6

45
6.3
All children ages 5– 17
Children who speak a language other than English at home

F I G U R E 1 –4
Number of children ages 5– 17 speaking a
language other than English at home:
1980 and 1990

NOTES: Includes only children in households and excludes children in group quarters.
SOURCES: U.S. Department of Commerce. (1980). 1980 Census of population, detailed
population characteristics: United States summary
(PC-80-1-D1-A). Washington, DC: U.S.
Bureau of the Census; U.S. Department of Commerce. (1990). 1990 Census of population
(CPH-L-96). Washington, DC: U.S. Bureau of the Census.
See appendix table 1– 4.

Indicators of Science and Mathematics Education 1995


22 percent of Hispanic parents had received at least some
college education. About one-half of the increases in the
proportion of students who performed at a basic level on
the
National Assessment of Education Progress between
1982 and 1992 can be attributed to the overall increase in
parental education levels.2 (See Chapter 2.)
In 1993, students of any race or ethnic origin were
more likely to be members of one-parent families. (See
figure 1-6.) The proportion of one-parent families
increased from 13 percent in 1970 to 30 percent in 1993;
in 1993, 63 percent of black families had only one parent.
(See appendix table 1-6.) Clearly, schools can no
longer assume that children have parents at home to
monitor school activities.
The proportion of children living in families with
incomes below the poverty level increased steadily
between 1970 and 1993— from 14 percent to 20 percent
of children 6 to 17 years old. (See figure 1-7 and appendix
table 1-7.) Although the proportion of black children

6 I N D I C AT O R S O F S C I E N C E A N D M AT H E M AT I C S E D U C AT I O N 1 9 9 5

1970 1980 1990 1993

0

20

40

60

80

100

Percent

of

families

White

Black
Hispanic

NOTES: Universe: Families with children under age 18. Data not available for Hispanics before
1980. Persons of Hispanic origin may be of any race.
SOURCES: U.S. Bureau of the Census. (1992). Household and family characteristics: March 1991
(Current Population Reports, Population Characteristics Series P-20, No. 458). Washington, DC:
U.S. Government Printing Office; U.S. Bureau of the Census. (1993). Household and family
characteristics: March 1992
(Current Population Reports, Population Characteristics Series P-20,
No. 467). Washington, DC: U.S. Government Printing Office; U.S. Bureau of the Census. (1994).
Household and family characteristics: March 1993 (Current Population Reports, Population
Characteristics Series P-20, No. 477). Washington, DC: U.S. Government Printing Office.
See appendix table 1– 6.

Indicators of Science and Mathematics Education 1995

F I G U R E 1 –6
Percent of white, black, and Hispanic families
with only one parent present, by race or
ethnic origin: 1970 to 1993

1970 1980 1990 1993 0

20

40

60

80

100

0– 11 years of school

Any college

All students

1970 1980 1990 1993 0

20

40

60

80

100

0– 11 years of school

Any college

White students

1970 1980 1990 1993 0

20

40

60

80

100

0– 11 years of school

Any college

Black students

1970 1980 1990 1993 0

20

40

60

80

100

0– 11 years of school

Any college

Hispanic students

NOTES: Data not available for Hispanics before 1980. Persons of Hispanic origin may be of any race.
SOURCES: U.S. Bureau of the Census. (1990). School enrollment— social and economic
characteristics of students: U.S. Bureau of the Census. (1971). School enrollment: October 1970
(Current Population Reports, Population Characteristics Series P-20, No. 222). Washington, DC: U.S.
Government Printing Office; U.S. Bureau of the Census. (1981). School enrollment— social and
economic characteristics of students: October 1981 and 1980 (Current Population Reports,
Population Characteristics Series P-20, No. 400). Washington, DC: U.S. Government Printing Office;
U.S. Bureau of the Census. (1991). School enrollment— social and economic characteristics of
students: October 1990 (Current Population Reports, Population Characteristics Series P-20, No. 460).
Washington, DC: U.S. Government Printing Office; U.S. Bureau of the Census. (1993). School
enrollment— social and economic characteristics of students: October 1992 (Current Population
Reports, Population Characteristics Series P-20, No. 474). Washington, DC: U.S. Government Printing
Office; U.S. Bureau of the Census. (1994). School enrollment— social and economic characteristics of
students: October 1993 (Current Population Reports, Current Population Series P-20, No. 479).
Washington, DC: U.S. Government Printing Office.
See appendix table 1– 5.

F I G U R E 1 –5
Education level of parents of elementary
or secondary school students, by student
race or ethnic origin: 1970 to 1993

Percent

of

parents

Percent

of

parents

Percent

of

parents

Percent

of

parents


I N T R O D U C T I O N 7
living in families with incomes below the poverty level
did not increase substantially during this period, it
remained high— at about 43 percent. High or increasing
levels of poverty for various populations could have a
negative influence on educational excellence and equity.

Postsecondary
Somewhat less racial and ethnic diversity exists among
the college population than the elementary and secondary
population, and diversity among postsecondary
students has not changed greatly in the past decade.
Between 1970 and 1993, the proportion of students
enrolled in college who were white decreased. (See figure
1-8 and appendix table 1-3.) The proportion of black students
has increased little since 1975, when it reached 10
percent. The proportion of students of other races and of
Hispanic origin each increased to about 7 percent of students
enrolled in college by 1993.

The Organization of the Report
This report considers changes in science and mathematics
education in the United States with regard to
excellence and equity within the educational system. The
data are presented in three chapters, followed by a concluding
chapter:
Chapter 2
provides an update on the achievement of
students, looking at overall changes in achievement and
differences by sex, race and ethnic origin, and region.
The chapter reports some “good news,” in terms of excellence
and equity; however, many questions remain.
Chapter 3 considers the characteristics of the elementary
and secondary educational system, examining the
adequacy of teachers, curricula, and resources in light of
what the science and mathematics standards have presented
as a guiding vision for science and mathematics
instruction. These data provide the basis for both celebration
and concern. These analyses also highlight areas
where information is slim.
Chapter 4 looks at postsecondary education. It considers
how well the system is producing students who are
adequately prepared for the science, engineering, and
technology workforce. This chapter examines equity in
terms of scientific literacy. It also considers how U.S. students
fare compared with students from other nations.
Chapter 5, the concluding chapter, contains additional
reflections, not as much on what the indicators say, but
on what the present system of indicators does not say.
The chapter returns to policy issues and suggests critical
themes that researchers should pursue in the future. n

1970 1975 1980 1985 1990 1993 0

2,000

4,000

6,000

8,000

10,000

Numbers

(in

thousands)White

Black
Hispanic

F I G U R E 1 –8
Race or ethnic origin of students
enrolled in college: 1970 to 1993

NOTES: Data not available for Hispanics before 1975. Persons of Hispanic origin may be
of any race.
SOURCES: U.S. Bureau of the Census. (1990). School enrollment– social and economic
characteristics of students: 1989
(Current Population Reports, Population Characteristics Series
P-20, No. 443). Washington, DC: U.S. Government Printing Office; U.S. Bureau of the Census.
(1991). School enrollment– social and economic characteristics of students: October 1990 (Current
Population Reports, Population Characteristics Series P-20, No. 460). Washington, DC: U.S.
Government Printing Office; U.S. Bureau of the Census. (1994). School enrollment– social and
economic characteristics of students: October 1993
(Current Population Reports, Current
Population Series, P-20, No. 479). Washington, DC: U.S. Government Printing Office.
See appendix table 1– 3.

Indicators of Science and Mathematics Education 1995

1970 1975 1980 1985 1990 1993

0

20

40

60

80

100

Percent

of

students

White

Black
Hispanic

1970 1980 1990 1993 0

20

40

60

80

100

Percent

of

children

White

Black

NOTE: Poverty status of 1970, 1980, 1990, and 1993 as surveyed on a sample in March of 1971,
1981, 1991, and 1994, respectively.
SOURCES: U.S. Bureau of the Census. (1971). Characteristics of the low-income population:
1970
(Current Population Reports, Population Characteristics Series P-60, No. 18). Washington, DC:
U.S. Government Printing Office; U.S. Bureau of the Census. (1981). Characteristics of the population
below the poverty level: 1980
(Current Population Reports, Population Characteristics Series P-60,
No. 133). Washington, DC: U.S. Government Printing Office; U.S. Bureau of the Census. (1991).
Poverty in the United States: 1990 (Current Population Reports, Population Characteristics Series P-60,
No. 175). Washington, DC: U.S. Government Printing Office; U.S. Bureau of the Census. (1994).
Official poverty statistics: 1993 (Current Population Reports, Population Characteristics Series P-60,
No. 188). Washington, DC: U.S. Government Printing Office.
See appendix table 1– 7.

F I G U R E 1 –7
Percent of white and black children ages 6– 17
below the poverty level: 1970 to 1993


8 I N D I C AT O R S O F S C I E N C E A N D M AT H E M AT I C S E D U C AT I O N 1 9 9 5
Endnotes
1 As specified in the Senate 1991 Appropriations Bill
(HR 5158), this report is a congressionally mandated
one:

“… In addition, the Committee expects the [National
Science] Foundation to establish a biennial science and
mathematics education indicator report, distinct from the
science and engineering indicator report, that evaluates
the progress of the United States in improving the science
and mathematics capability of its students, and the
effectiveness of all Federal and State education programs
as part of this process.”

2 Calculated by deriving the percentage of students
achieving basic levels in 1982 and 1992 for each education
level of parents and adjusting the education of parents
to a current population.


National Science and Technology Council, Committee on Education Training.
(1995). [Special tabulations provided by the working group on the budget of the NTSC
Committee on Education and Training]. Unpublished tabulations.

National Science Foundation. (1992). EHR Directory of awards: Fiscal year 1990
(NSF 92-75). Washington, DC: NSF.

National Science Foundation. (1994). [Budget figures]. Unpublished tabulations.
O’Day, J.A., & Smith, M.S. (1993). Systemic reform and educational opportunity.
In S.H. Fuhrman (Ed.), Designing coherent education policy (pp. 250-312). New York: JosseyBass
Inc.

U.S. Bureau of the Census. (1971). Characteristics of the low-income population:
1970
(Current Population Reports, Population Characteristics Series P-60, No. 18).
Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1971). School enrollment: October 1970 (Current
Population Reports, Population Characteristics Series P-20, No. 222). Washington, DC:
U.S. Government Printing Office.

U.S. Bureau of the Census. (1981). Characteristics of the population below the poverty
level: 1980
(Current Population Reports, Population Characteristics Series P-60, No.
133). Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1981). School enrollment— social and economic characteristics
of students: October 1981 and 1980
(Current Population Reports, Population
Characteristics Series P-20, No. 400). Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1990). School enrollment— social and economic characteristics
of students: 1989
(Current Population Reports, Population Characteristics Series P20,
No. 443). Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1991). Poverty in the United States: 1990 (Current
Population Reports, Population Characteristics Series P-60, No. 175). Washington, DC:
U.S. Government Printing Office.

U.S. Bureau of the Census. (1991). School enrollment— social and economic characteristics
of students: October 1990
(Current Population Reports, Population Characteristics
Series P-20, No. 460). Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1992). Household and family characteristics: March
1991
(Current Population Reports, Population Characteristics Series P-20, No. 458).
Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1993). Household and family characteristics: March
1992
(Current Population Reports, Population Characteristics Series P-20, No. 467).
Washington, DC: U.S. Government Printing Office.

Chapter 1 References


U.S. Bureau of the Census. (1993). School enrollment— social and economic characteristics
of students: October 1992
(Current Population Reports, Population Characteristics
Series P-20, No. 474). Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1994). Household and family characteristics: March
1993
(Current Population Reports, Population Characteristics Series P-20, No. 477).
Washington, DC: U.S. Government Printing Office.

U.S. Bureau of the Census. (1994). Official poverty statistics: 1993 (Current
Population Reports, Population Series P-60, No. 188). Washington, DC: U.S. Government
Printing Office.

U.S. Bureau of the Census. (1994). School enrollment— social and economic characteristics
of students: October 1993
(Current Population Reports, Population Characteristics
Series P-20, No. 479). Washington, DC: U.S. Government Printing Office.

U.S. Department of Commerce. (1980). 1980 Census of population, detailed population
characteristics: United States summary
(PC 80-1-D1-A). Washington, DC: U.S. Bureau
of the Census.

U.S. Department of Commerce. (1990). 1990 Census of population (CPH-L-96).
Washington, DC: U.S. Bureau of the Census.

1 0 I N D I C AT O R S O F S C I E N C E A N D M AT H E M AT I C S E D U C AT I O N 1 9 9 5


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