A study was conducted at William Rainey Harper College (WRHC) in Palatine, Illinois, to evaluate the effectiveness of a new academic probation intervention program. Probationary students are those who are warned the previous semester but whose grade point averages (GPA's) still fall below 2.0 (4-point scale). Students on probation must participate in a success-oriented intervention program. The evaluation study was conducted of all 278 students who participated in the fall 1990 probation intervention program. Students' academic records were evaluated and a follow-up telephone survey was conducted. A total of 215 students were interviewed for a 75% response rate. Study findings included the following: (1) among students who participated in the program, 73% returned the following spring; (2) as a result of the program, 64% had a clear understanding of the probation system, 67% understood how GPA was calculated, and 84% were able to identify factors leading to low GPA; (3) 35% of respondents cited poor study habits and working too many hours as the primary causes of low GPA; (4) although 85% of respondents indicated that their counselor helped them develop a plan to improve their grades, 57% reported that they had not changed their educational goals, suggesting that intervention influenced work habits more than goals; (5) chief educational goals of respondents were to earn an associate degree for transfer (39%), to earn an associate degree (29%), and to transfer without a degree (15%); (6) students not returning after the intervention cited job responsibilities (35%), personal and family responsibilities (25%), and a need for time away to reset their goals (21%); and (7) non-returning students had achieved lower GPA's and were better able to cite the causes of low GPA than returning students. (PAA)