This is a second report (the first was entitled "Restructuring") for our program evaluation efforts for the 1994-95 school year at the Chicago Teachers Academy for Mathematics and Science. The work was organized by Robert Stake at the Center for Instructional Research and Curriculum Evaluation (CIRCE) at the University of Illinois. Assisting in this effort in addition to the authors shown on the cover were: Carmilva Flores, Edith Cisneros, Marilyn Murphy - of the University of Illinois and Eleanor Chelimsky, formerly of the U. S. General Accounting Office. Providing generous counsel to our deliberations on professional development were Olivia Watkins and Bill Rice of the Chicago Public Schools, Mark Smylie, Michael and Susan Klonsky, Robert Rich, Betty Merchant, Renee Clift, Mark Gierl and Paul Thurston of the University of Illinois, Dick Elsholz of the Michigan schools, Linda Mabry of Indiana University, Tony Bryk of the University of Chicago, Judith Warren Little of the University of California, Michael Huberman of Harvard, Michael Eraut of the University of Sussex and many staff members of the U. S. General Accounting Office. Under contract between the University's Board of Trustees and the Teachers Academy, during the period September 1 to August 30, the CIRCE team conducted observations of Academy operations and studied documents to reach an understanding of key issues and indications of quality work. Earlier, the Director and Academy Board had emphasized their concern about knowing the impact of its program on schools, teachers and children. Other evaluation specialists had been hired to do a more conventional study of achievement gains; we stuck largely to our qualitative and responsive methods of evaluation based on issues and interpretation. Out views of quality are included within the discussion of strategies of professional development contained in this report.