| SAT | = combined verbal and math SAT scores |
| rank | = percentile rank in class |
| satobs | = 1 if the SAT score is observed; 0 otherwise |
| mlhs | = 1 if the respondent's mother did not complete high school; = 0 otherwise |
| mcol | = 1 if the respondent's mother completed one or more years of college; = 0 otherwise |
| flhs | = 1 if the respondent's father did not complete high school; = 0 otherwise |
| fcol | = 1 if the respondent's father completed one or more years of college; = 0 otherwise |
| black | = 1 if the respondent is African-American(=0 otherwise) |
| hisp | = 1 if the respondent is Hispanic (=0 otherwise) |
| asian | = 1 if the respondent is Asian-American (=0 otherwise) |
| female | = 1 if the respondent is female (=0 otherwise) |
| rdsc | = scaled reading score (mean=50, std. dev=10) |
| vocab | = scaled vocabulary score |
| pict | = scaled picture number score |
| lgsc | = scaled letter groups score |
| matsc | = scaled mathematics score |
| mosaic | = scaled mosaic comparison score |
| nsib | = # of siblings for the respondent |
The sample consists of 6370 individuals who were high school seniors in 1972.
