COR #336-Attachment 5

        WLS Project - History of Interviews

April, 1957 Questionnaire

       Wisconsin High School Seniors - Total Sample
       N = 95% of 36,000 = 34,151


October, 1957 Questionnaire

       Parents of Professor Little's original 1/6 sample
       N = 42% of 5,675 = 2,780


March, 1958 Questionnaire

       Non-college planners on April, 1957 Questionnaire among the
       top 1/4 students on High School Rank or identified by teachers
       as college material.
       N = 48% of 1,060 = 515


Spring, 1959

       College registrars for college attenders among top 1/4 High 
       School Rank students within Professor Little's original 
       1/6 sample - as reported by parents in October, 1957.
       N = 488


May, 1959

       College dropouts among those followed up through registrars.
       N = 69% of 89 = 57


1964 Postcard Questionnaire

       1/3 sample and Top 10% IQ students
       N = 87.9% of 12,556 = 11,039


1975 Follow-Up Survey

       1/3 sample students
       N = 88.6% of 10,317 = 9,138


1977 Survey of Siblings

       Randomly selected siblings of 1/3 sample 1975 respondents
       N = 88.8% of 2,392 = 2,124

1992 Survey of Graduates

       1/3 sample students
       N = % of 10,317 (__% of ___living)

1993 Survey of Siblings

       1977 Siblings plus addition randomly selected siblings of
         1/3 sample graduates
       N = __% of ____ (__% of ___living)