This bulletin demonstrates that Berkeley, California's educational problem is and has been that of meeting the varied needs of a population such as may be found in any typical American city. The varied population needs, together with the rapid growth, have brought many difficult problems to Berkeley, just has they have to other cities. Based on the facts presented in this bulletin, the authors assert that certain conclusions and tendencies are evident: (1) The attracting and holding power of the junior high school organization is much more effective than the type of school which previously served grades 7, 8, and 9 in Berkeley; (2) The teaching staff is much better prepared for its work than obtained under the earlier type of organization; (3) Much richer and more varied advantages are provided for the education of the pupils in grades 7, 8, and 9 than were supplied before the junior high schools were organized; (4) More advantages emanate from pupil contacts with each other, since large numbers of the same age and social development are brought together in the junior high school; (5) The total situation in a junior high school enrolling 500 to 800 pupils with a sufficient staff of competent teachers is more inspiring to all concerned than was possible under the previous organization where the seventh and eighth grades were taught in small groups in the elementary schools. More types of things can be attempted; more interests and varieties of ability are appealed to and properly nourished, and all--pupils and teachers--become more ambitious to do the most worth-while things in thoroughly effective ways. Chapters in this bulletin include: (1) The city of Berkeley; (2) The Berkeley school system; (3) Establishment of the junior high school system; (4) The objectives of the junior high school; (5) The teaching staff; (6) The curricula; (7) The Burbank Junior High School; (8) The Edison Junior High School; (9) The Garfield Junior High School; (10) The Willard Junior High School; (11) The school-counseling program; (12) Contributing agencies; and (13) Summary. (Contains 2 tables.) [This bulletin was written in cooperation with H. B. Wilson. Best copy available has been provided.]