The importance of cooperation between colleges and schools to insure that students have adequate preparation for college-level work is considered by the assistant vice-president of the University of California System. It is claimed that higher college admission standards would screen out underprepared students but would not solve the problem of underprepared high school graduates. Examples of college-school collaboration to improve the quality of education at the national level and within California are described. The College Board's Project Equality has brought together representatives of colleges and schools to define a basic academic curriculum and the expected learning outcomes in basic subject areas. Collaboration is also evident in the provision that about 500 high school students are allowed to enroll concurrently in college courses at the University of California. In addition, the Bay Area Writing Project at 17 California campuses provides a summer writing institute for high school teachers from various disciplines. Since the writing project has been perceived as a good model for improvement of students' writing, joint mathematics inservice efforts are also being initiated. Additional collaborative programs in California and other states are described. It is recommended that remedial courses need to be shifted back to high schools. (SW)