To differentiate certain characteristics of unsuccessful, marginally successful, or successful students in a junior college remedial program, the author made a random selection of 219 males and 120 females (from the 790 enrolled in a 1.5 probation program) according to the independent variables of high school rank (HSR), SCAT-Total score, class load, age, attendance, and sex. The hypotheses--that there are no differences between dismissed, retained, or good standing probationary students on these six variables--were rejected at the .05 level or less: (1) HSR--for total group, but not for males or females; (2) SCAT-T--for males, females, and total grouping; (3) class load--for females only, not for males or total; (4) age--for all three groupings; (5) attendance--for all groupings; and (6) sex--for males and females, but not for total. The successful (good standing) probationary student is about a year older than his or her classmates, attends class regularly, and has an HSR in at least the 22nd percentile. Females will have a SCAT-T score of 54 and limit their class load to nine hours. Males will have a SCAT-T score of 57 and will take only enough classes to exempt them from the draft. The remedial program is relatively ineffective for the younger students. , especially males, just our of high school, with an HSR in the lowest 20%. Also, males with a SCAT-T raw score at or below 52 and females with a score at or below 46 have little chance of success. (HH)