Results of studying the trend of declining enrollment for black, full-time undergraduates in New Jersey are presented. Factors accounting for the enrollment decline of this group include entry into the labor force of a larger number of black high school graduates and an increase in the number of black students going to colleges outside of New Jersey. In addition, the number of black undergraduates enrolled through the Educational Opportunity Fund (EOF) program has declined. The data show that 418 fewer black full-time, first-time freshmen enrolled in New Jersey colleges in 1983 than in 1980, while there were 406 more high school graduates in 1983 than in 1980. About 75 percent of black freshmen annually are recent high school graduates from New Jersey. Options chosen by high school graduates other than college include attending nondegree-granting institutions, entering government service and the civilian labor force, and other activities, including homemaking. Attention is also directed to: the impact of out-migration, the recruitment power of colleges, and the contribution of the EOF programs. Appendices include data on enrollment trends by sector and profiles of specific colleges, along with a guidance counselor questionnaire. (SW)