Documentation of immersion and post-immersion (secondary level) programs in the Montreal area shows that students are switching from post-immersion to regular programs, which include French as a second language. A survey was undertaken in the spring of 1979 to assess the number of students switching out of post-immersion classes, the grade level at which they switch, and their reasons. Two-part questionnaires were distributed to 222 students who had switched to regular programs. These instruments asked for (1) background information, including languages spoken at home; (2) information on the types of immersion program they had attended; and (3) their ratings of courses in their last year of immersion and of post-immersion in terms of interest, degree of difficulty, and amount of work demanded. Finally, students were asked to give their reasons for leaving the post-immersion program. The results are summarized in the text of the report as well as in appended tables. Generally, reasons given for switching out of post-immersion programs were either the demands made by the courses or low marks achieved in the courses. However, the predominant rating given for most courses was average. It might be, therefore, that the courses were not sufficiencly interesting to warrant the amount of work they demanded. (AMH)