Examining a 10-year period beginning in 1972-73, this report provides data on the enrollment of full-time students at the four Illinois Eastern Community Colleges according to the high schools from which the students graduated. Introductory material outlines the purpose of the study, discusses findings from previous research, and points to the study's limitations. Next, data from the study are highlighted, including the following findings: (1) in 1972-73, 2,061 students graduated from the high schools in the 10 counties studied, and 447 of the students (22%) enrolled full-time at one of the Eastern Illinois colleges; (2) in 1981-82, the high schools in the 10 counties graduated 1,869 students and Illinois Eastern enrolled 495 full-time students or 26% of the graduates; and (3) in 1973-74, 8 of the 23 high schools provided 65% of the full-time students enrolled in the colleges, while in 1982-83, 71% of the high school graduates enrolled in the colleges came from these schools. The bulk of the report consists of 27 line graphs, a county analysis, and a trend line graph of high school graduates. The graphs show the enrollment of full-time students at each of the four colleges according to high school and provide data on out-of-district, out-of-state, and foreign students. (HB)