Andrew Weeks

Willis W. Clark, fourth from right, his wife, Ethel, and daughter, June Duran, pose with California Test Bureau staff at a Monterey, Calif., retreat in the late 1950s.

–Courtesy of June Duran

Read More…



Early History

The Willis W. and Ethel M. Clark Foundation was incorporated in 1953 as a California private foundation and has enjoyed over fifty years of community service to the Monterey Peninsula of California. Its founders were pioneers in educational testing and research and in 1926 started the California Test Bureau (known as CTB). Dr. Clark was a noted educator who became nationally recognized for his work in the development of standardized, diagnostic tests designed to identify a student’s strengths and weaknesses in the basic skills. Mrs. Clark used her business acumen and marketing skills to bring CTB to national prominence. The Clarks loved the Monterey Peninsula and in 1958 moved the company’s headquarters from Los Angeles to Monterey. In 1965, the company was sold to McGraw-Hill and is now known as CTB/McGraw-Hill.

Willis and Ethel Clark

Willis & Ethel Clark in 1963