The major objectives and benefits of the Advanced Placement Program (APP) are summarized, and data specific to Delaware are compared to national statistics about advanced placement (AP) courses in high schools. School participation in the APP is considered an indicator of academic success by educators and policy makers. The extent to which Delaware students participated in the May 1988 AP examinations and their success rates by subject area are provided. AP course offerings in Delaware public high schools and their 1988-89 enrollments by subject area are presented. Data are provided for 463 public and 526 non-public school students taking a total of 1,397 examinations. Delaware has a very high non-public involvement in AP examinations, with over half of those sitting for AP examinations representing non-public schools. Public school participation is increasing at about five times the rate of non-public participation. The state mean for all candidates exceeded the national mean by about 0.2 point. About 60% of Delaware's full-time public high schools provide AP courses. Twenty-seven percent of the examinations taken by public school students were in mathematics and science, 59% in English and social sciences, 12% in computer science, and 2% in foreign languages. Thirty-five percent of the examinations taken by non-public school students were in mathematics and science, 44% in English and social sciences, 8% in computer science, 11% in foreign languages, and 2% in art and music. Seven data tables are included. (SLD)