The San Diego High School Science Teacher Development Program was designed to address the lack of skills in communication and analytical reasoning and the need for increased scientific literacy at seven urban high schools in San Diego whose student populations from minority ethnic backgrounds exceed 50%. Among project objectives were: to improve the science achievement of college bound students, the basic language and math skills of students in high school science, and academic counseling for students to prepare for possible science or technical majors in college; and to develop a model for high school/university cooperation. The project included provisions for San Diego State faculty consultants and student tutors (science majors) to be at the school site. It also provided support for in-service professional training for high school teachers. After 3 years of the project, all indications indicated that: the project encouraged meaningful cooperation between high school and university faculty; all seven schools improved in basic language and math skills more than the district as a whole; and Writing Across the Curriculum programs have a synergistic positive effect on writing ability. Appended are an assessment of science student writing; results from analysis of the IPSP Problem Solving test; a copy of the Maxigrant Continuation questionnaire; and the 1985/86 roster of the San Diego High School Teacher Development program. (Author/SM)