Part of a series on California's future through 2025, this theme issue of California Agriculture examines how demographic changes and increased ethnic diversity will affect the state's agriculture, economy, and educational system. Research articles are: "Immigration, High Fertility Fuel State's Population Growth" (William A. V. Clark); "For California Farmworkers, Future Holds Little Prospect for Change" (Philip L. Martin, J. Edward Taylor); "Central Valley Evolving into Patchwork of Poverty and Prosperity" (J. Edward Taylor, Philip L. Martin); "Farmworkers Putting down Roots in Central Valley Communities" (Juan-Vicente Palerm); "Welfare Reform Shines a Light on Work-Force Development Challenges" (David Campbell); "How Will the Central Valley Economy Grow?" (Ted K. Bradshaw);"'Third' Institution Needed To Bridge Family-School Gap for Youth" (Stephen T. Russell); "ANR Responds to Hispanic Teenage Pregnancy" (Elizabeth Gong, Stephen T. Russell); "Elderly Population Will Increase Dramatically" (Bryan Lincoln); and "UC Must Take Lead in Curricula Reform, Teacher Training" (Mary V. Price, Richard A. Cardullo). Short research updates include "Women, Minority Farmers Are Growing in California,""Grandparents Become Primary Parents," and "'Tidal Wave II' To Hit Higher Education." (Contains references, photographs, and figures.) (SV)