This report provides data on student characteristics, enrollments, and flow in Oklahoma's postsecondary education institutions, public and private, including two-year colleges. Maps and tables, with some narrative, present information on enrollments as a percentage of population, rates of entry into postsecondary education, geographic distribution of enrollments, student migration patterns, first-time freshman enrollment patterns, headcount enrollments (by class level, division, student credit hours, race/ethnic group, gender, class level, full/part-time status, program of study, geographic origin) progression rates for cohorts of first time freshmen by institution type, transfer patterns (within-state and interstate), enrollment projections through 2009-10, American College Testing Program mean scores, graduation rates for all students and for transfers, financial aid distribution patterns, and student participation in noncredit activities. (MSE)