This databook contains some of the basic information to be used in decision making and planning in the Mt. San Antonio College (MSAC) District. Part I focuses on the demographic characteristics of the district population, feeder school districts, and data from other educational providers. Part II presents statewide data on potential enrollment by age and minority composition, freshman admission eligibility comparisons, and ethnic group enrollment potential. Part III focuses specifically on MSAC students, looking at geographic distribution of MSAC credit enrollment, credit enrollment by zip code, sex, ethnicity, and age for spring, summer and fall 1985, and educational goal distributions. Instructional and supporting services and programs are examined in part IV, which includes a summary of instructional programs by division/department/support services, a comparison of retention between first census final count by department, grade distributions, MSAC adult education enrollment, and degrees/certificates/diplomas awarded. Part V includes data on MSAC staff, including personal characteristics, full-time certified staff in 5-year cohorts, and full-time classified and confidential staff in 5-year cohorts. Financial profiles of the college and the surrounding community are presented in part VI, while part VII features information on the college's physical plant. Finally, part VIII looks at economic and social trends that will affect educational planning. (EJV)