The Pennsylvania Advancement School operates as a laboratory for stimulating positive change in the educational community through its programs for urban students and teachers. Sixth to eighth grade boys performing below potential in Philadelphia schools are brought to the school to participate in instructional projects during at least one 14-week session. The projects (which included Improvisational Drama and a Human Development Lab in the fall semester of 1968) transcend subject matter and encourage students to perceive, analyze, form values, and creatively act upon those values. The school also features group counseling for students and school-community follow-through on students after they have left the program. The teacher education program, which emphasizes reciprocal learning for Advancement School staff and Philadelphia teachers, includes temporary placement of staff in Philadelphia schools, acceptance of teachers for year-long residencies, field tests of school programs by teachers with staff guidance, and a summer workshop. The summer workshop for 1968, which focused on developing the teacher's individual possibilities (for personal growth and teaching) and awakening him to his role as change agent in his home school, was structured around four 1-week workshops (Simulations, Achievement Motivation, Communications, and Media) and exercises in group processes. (A description of the summer workshop program is appended.) (LP)