Data on the success rates of non-high school graduates at Miami-Dade Community College (M-DCC), as determined by graduation or the achievement of a 2.00 grade point average (GPA) and 30 or more credit hours, are presented and analyzed in this report. Table 1 summarizes the enrollment of non-high school graduates at M-DCC by ethnic group, using closing term data for the full academic years 1980-81, 1981-82, and 1982-83. Table 2 provides data on the success rates of cohorts of non-high school graduates who entered M-DCC in the fall quarters of 1977 through 1980, and table 3 provides comparable data on success rates of high school graduates over the same period. The last table, table 4, provides a summary of the distribution by age of non-high school graduates from fall 1980 through summer 1983. Highlights of the findings show that: (1) the number of non-high school graduates enrolling at M-DCC declined consistently across all categories from 1980 to 1983; (2) in 1980-81, 60% of all of the non-high school graduates enrolled were black, and in 1982-83, 37% were black; and (3) the success rate of non-high school graduates over the 5-year period beginning in 1977 was 15.1%. The report concludes that a proposed exclusion of non-high school graduates from M-DCC would affect black students most heavily and would prohibit some students from achieving success at the two-year college and beyond. (HB)