This report evaluates an experimental trimester plan adopted by a Birmingham (Alabama) high school during the 1976-77 school year. The Birmingham trimester plan maintained the usual length school year, simply dividing it into three "mesters," rather than the traditional two. The plan also lengthened each class period to 85 minutes, so that each day ran from 8 a.m. to 4 p.m. and consisted of five class periods. Each teacher and student had classes scheduled for four of the five periods and was at school either from 8 a.m. to 2:30 p.m. or from 9:30 a.m. to 4 p.m. The evaluation presented here is based on data from two survey questionnaires completed by teachers who were at the school both during the 1976-77 school year and during the 1975-76, when a conventional schedule was used. Findings of the surveys showed that 82 percent of the faculty had no difficulties in adjusting to the trimester, but 62.5 percent felt that students had not learned more than in previous years. Approximately 82 percent felt that paperwork had increased under the new schedule, and 50 percent felt they had no input into the scheduling process. It had been hoped that the trimester schedule would have particular benefits for the visual arts program; however, it proved only a qualified success in this respect. (JG)