This paper describes some programs that provide support for college students at risk of academic failure students, and offers an approach for a model academic probation program. In general, the literature identifies two types of program based on the type of student participation: mandatory or voluntary. Intrusive programs, in which student participation is required, develop from the conclusion that students who are failing need help they frequently will not seek out on their own or accept when offered. Several examples of such programs are presented. Nonintrusive, voluntary programs, are also used; several such programs are described. Some elements of a model comprehensive program are outlined. Such a program provides frequent feedback about academic standing and a variety of techniques to promote student involvement. (Contains 27 references.) (SLD)