Over 4700 students classified as communicatively, physically, academically, or severely handicapped were served in San Juan, under California's Master Plan for Special Education. The majority were referred for poor achievement in reading, mathematics, spelling, or oral language. The major features of this federally mandated special education program were: student identification; provision of services; mainstreaming; student performance; satisfaction of teachers, parents and administrators; professional development; and program management. Evaluation methods included surveys, questionnaires, interviews, student academic and attitude measures and other student data available through a computerized information system. The findings include descriptions of academic growth; achievement on the Wide Range Achievement Test, Iowa Tests of Basic Skills, Stanford Achievement Test, and district competency tests; teacher participation in inservice education; parent satisfaction; mainstreaming; and per student costs. The evaluation also identified some program areas which could be considered for improvement in 1979-80. (Appended are descriptions of California's Master Plan, a glossary of terms, criteria for placement and a guide to special education program evaluation.) (Author/CP)