0 = male
1 = female

math achievement test
-8.33 = low
25 = high

mosaic, pattern test
-4 = Low
56 = high

visualization test
-4 = low
16 = high

visualization retest
0 = Lowest
9.5 = highest

scholastic aptitude test - math
200 = minmum score
500 = average score
800 = maximum score

ethnicity
1 = Euro-Amer
2 = African-Amer
3 = Latino-Amer
4 = Asian-Amer
98 = multi ethnic
99 = blank

1 = protestant
2 = catholic
3 = no religion
98 = other religion
99 = blank

competence scale
1 = Lowest
4 = Highest

mother's educ revised
1 = HS grad or less
2 = Some College
3 = BS or More