Policy should be made with a concern for facts, as well as principles, and with a clear understanding of their implications for all students. Poor results were also more common among minority students and those from low-income households. Regular education academic classes are difficult environments. Students who spent more of their class time in those settings were significantly more likely to fail courses than other students, independent of the other differences between them. Course failure, with its accompanying loss of credits toward graduation, was among the most accurate predictors of students later dropping out of school.
Vocational courses seem to be a positive factor in keeping students in school.
Participation in a work experience program as part of their vocational education further enhanced the probability that students with disabilities would have few absences, succeed in their courses, and graduate.