A study was conducted at Mount San Antonio College (MSAC), California, to compare summer and fall session students in terms of residence, age, ethnicity, academic goals, prior educational experience, and majors. Study findings, based on data on students attending summer sessions between 1984 and 1988, revealed that, in comparison to fall students, summer students were younger; more likely to reside in the MSAC district; more likely to be transfers from four-year colleges and universities; more likely to declare an educational goal of attaining a bachelor's degree; and more likely to be enrolled in transfer majors. The study also found that: (1) summer credit enrollment of students under the age of 17 had grown from 1.7% in 1984 to 3.4% in 1988; (2) over 63% of the summer 1988 students were between the ages of 17 and 24; (3) the enrollment of Asian students was nearly twice as high in the summer (21.5%) as the fall (12.8%), while other minorities maintained similar percentages of the total enrollment in summer and fall; (4) in 1988, 16.2% of the summer students and 10.1% of the fall students had taken no previous courses at MSAC; and (5) 20.2% of the summer 1988 students and 11% of the fall students were transfers from four-year colleges and universities. The bulk of the report consists of data tables comparing summer and fall student characteristics between 1984 and 1988. (AYC)