In 1981, the Bilingual Placement and Monitoring Instructional Support System (BPMIS) Center in the School District of Lancaster (Pennsylvania) was established. Partially supported by Title VII funds, the Center provides comprehensive services to assure sound educational placement, continuous monitoring, successful transition into all English-medium instructional classes, and effective counseling and support services to limited English proficient (LEP) students (Puerto Rican and Indochinese immigrants) and the instructional staff. The BPMIS Center program was evaluated in terms of the performance objectives for each of the first three years of implementations. Pretests and posttest scores in the Language Assessment Battery and the Iowa Tests of Basic Skills were used to analyze pupil linguistics and academic achievement. Questionnaires and interview schedules were used where qualitative judgements were required. Previous evaluations of the bilingual education program had not produced favorable pupil achievement. Pupils having BPMIS Center treatment showed significant linguistic and academic achievement. When transferred to the all-English program, they achieved reading and mathematics scores at grade and class level. Test scores are summarized in 28 tables. (Author/BS)