Combined file of three points of measurement: 1992 questionnaire, 1992 mathematical test and 1995 questionnaire. Attitudes and opinions towards mathematics and french / school marks, expected future marks, self-rating / teacher / schooltype / choice of subjects / reasons for choosing mathematics, physics, french / persons influencing decision / future educational plans, post-secondary education / interest in various occupational sectors / future expectations regarding work, marriage, cohabitation, working partner, children / technical training of parents / friends / hobbies. Math test for third year of secondary education ( HAVO/VWO ). School-leavers and students ( 1995 ) questionnaire: current educational situation / compatibility with expectations when choosing subjects in secondary education / study results / difficulty / attitudes and opinions regarding mathematics and french / change in subjects during secondary education / reasons for quitting with mathematics, physics, chemistry / future expectations / choice of subjects fits follow-up education / better fitting alternative choice / favourite combination of subjects, profile. Background variables: basic characteristics/ education