Student effort, the campus environment, and student age and full- or part-time status have significant effects on outcomes for university students. This study employed the same three sets of independent variables to predict gains in general education and in personal and social development for community college students. The study analyzed data from the Community College Student Experiences Questionnaire completed by 4,210 students from nine geographically diverse community colleges. For both educational and personal/social outcomes, quality and quantity of student effort and positive perception of the campus environment were significant predictors regardless of the student's age. Environment interacting with full- or part-time status was also a significant predictor of gains in general education. More than half the sample reported working from 10 to 20 hours weekly and another 26 percent worked at least 30 hours per week. Approximately 75 percent estimated spending 20 hours or less per week studying and preparing for classes. Students who were more involved and those who rated their campus environment positively reported making more progress in personal and social development as well as in general education than less involved and less satisfied students. (Contains 24 references.) (Author/JLS)