Table 1. Age at high school graduation for spring 1990 high school sophomores, by select student background characteristics: 2000

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Characteristic	<20 years old at high school graduation	20+ at high school graduation		No high school graduation or alternative completion¹
Total	88.1	1.3		10.6

Sex
Female	87.4	1.2		11.4
Male	88.7	1.4		9.9

Race/ethnicity²
White	90.9	0.7		8.4
Black or African American	82.6	2.5		15.0
Hispanic or Latino	76.8	2.8	!	20.3
Asian or Pacific Islander	90.8	2.7	!	‡
American Indian or Alaska Native	71.4	4.2	!	24.4
More than One Race	81.6	4.3	!	14.2

Parents' SES
Lowest quartile	78.2	2.6	!	19.1
Quartile 2	88.0	1.2	!	10.8
Quartile 3	90.6	0.9	!	8.5
Highest quartile	97.4	0.5	!	2.2

! Interpret data with caution. Estimate is unstable because the standard error represents more than 30 percent of the estimate.
‡ Reporting standards are not met; the standard error represents more than 50 percent of the estimate.
¹ Includes GED recipients, as well as those who received an alternative form of high school completion, such as a certificate of attendance.
² Students of Hispanic or Latino ethnicity are included in the Hispanic or Latino category regardless of race.
Note: Totals may not sum to 100 due to rounding.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics. National Education Longitudinal Study of 1988 (NELS:88) Fourth Follow-Up Restricted-Use File.

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