Instituted by the Migrant Section, Florida State Department of Education for the 1970-71 school year, the Migrant Compensatory Learn and Earn Program operatived 30 mobile units (2 on elementary, 4 on high school, and 24 on junior high school campuses) which housed 4 pre-vocational programs (Hospital, Housekeeping, Auto Tune-up, and Supermarket) on 21 school campuses in 5 Florida counties: Broward, Hillsborough, Orange, Palm Beach, and Polk. For evaluative purposes, pre- and post-test data were collected on this sample of 441 participating students using various instruments, checklists, surveys, and work sample tests ranging from the Peabody Picture Vocabulary Test to teachers' weekly reports. Evaluation revealed that the experimental group generally showed no significant advantage over the control group (n=353) in terms of reading comprehension, arithmetic-computation ability, and self-esteem; however, significant positive findings for the experimental group were indicated in the students' participatory ability in conducting oral job interviews and completing job application forms; in 11 of 14 areas of on-the-job work functions; in attendance; and in personal appearance, behavior, relationship to peers, and punctuality. Included in the document are 13 recommendations, 17 tables, and 17 appendixes showing and describing the program and evaluative instrumentation used. (MJB)