 Grades 10–12 were then served until the end of the 2004–2005 school year.During the 1974–1975 school year, Berkner served Freshmen in order to relieve over-crowding at Richardson Jr. High while the new Liberty Jr. High was completed for the following Fall.From 1976–1979, Berkner again served Freshman in order to relieve over-crowding at Liberty Jr. High.