Results from North Carolina's End-of-Course Testing Program in 1989-90 are presented. Participation, student characteristics, and achievement are summarized, largely in table form, for the following subject areas: (1) Algebra I, (2) Geometry, (3) Algebra II, (4) Biology, (5) Chemistry, (6) Physics, (7) U.S. History, and (8) English I. Background information is also given on the history, purposes, and development of the End-of-Course testing program. Of the 391,611 end-of-course tests taken in 1989-90, 919 were perfect scores, and 8,817 had no more than three items answered incorrectly. Many results from previous years are summarized, documenting modest gains over the last 5 years in the proportion of students taking advanced mathematics and in the percentage of students beginning an accelerated mathematics sequence in grade 8. Strengths and weaknesses of schools and school systems can be identified by examining relative performance on the 2,240 test items assessed in 1989-90. Eleven tables and 26 figures illustrate comparative performance for previous years, and 1989-90 results. The last two sections of the paper present eight tables of results for outstanding school systems, and five tables of results for public school systems, respectively. (SLD)