Designed to survey the effects of the current probation policy at Shasta College, this report estimates the student loss attributable to the policy and discusses means of identifying potential probationary students. After introducing the probation policy, which requires at least a 2.0 grade point average to avoid academic probation and the completion of at least 60% of the courses attempted to avoid progress probation, the report discusses the effects of the policy on one group of students placed on probation due to their performance in fall 1981 (F81) and another group placed on probation on the basis of their fall 1981 and spring 1982 performance (S82). The following sections consider the loss of students attributable to the policy and the major characteristics of probationary students, indicating that: (1) only 45% of the F81 group on progress probation returned in the spring 1982, while 58% of the S82 group returned in fall 1982; (2) approximately 80 of the 382 students on progress probation in the F81 group and 47 of the 474 students on progress probation in the S82 group were discouraged from returning because they were placed on probation; (3) the two best identifiers of potential probationary students were attendance at college for personal interest and absence of a clear objective in attending college. Based on study findings, it was recommended that a probation prevention plan be instituted and that progress probation be enforced with a 50% success ratio. (HB)