A phase-elective, non-graded, flexibly scheduled versus a traditional instructional program: the effects on urban high school student achievement

Davis, Allen Leonard2025-10-232025-10-231975https://hdl.handle.net/10919/138636xi, 176 leavesapplication/pdfenIn CopyrightLD5655.V856 1975.D394A phase-elective, non-graded, flexibly scheduled versus a traditional instructional program: the effects on urban high school student achievementDissertation