middle of campus. During this time, women were also given a more official standing. The Texas Legislature in 1911 refused to give A&M permission to hold a summer semester unless women were also permitted to attend. For the next several decades during the summers cadets were not required to be in uniform and women could attend class and participate in intramural activities. Texas A&M graduates were called to use their military training during World War I, and by 1918, 49% of graduates of the college were in military service, a larger percentage than any other college or university. In early September 1918, the entire senior class was mustered into military service, with plans to send the younger students at staggered dates throughout the next year. Many of the seniors were fighting in France when the war ended two months later. In total, over 1,200 former students served as commissioned officers during World War I. Texas A&M Hillel, the oldest Hillel organization in the United States, was founded in 1920. The organization occurred three years before the national Hillel Foundation was organized at the University of Illinois. After the war, Texas A&M grew rapidly and became nationally recognized for its programs in agriculture, engineering, and military science. The first graduate school was organized in 1924, and, in 1925, Mary Evelyn Crawford Locke became the first female to receive a diploma from Texas A&M, although she was not allowed to participate in the graduation ceremony. The following month the Board of Directors officially prohibited all women from enrolling. In 1926, they codified that women in summer school had an unofficial status and could not pursue a degree. By 1930, however, over had attended classes at A&M. In the late 1920s, following the discovery of oil on university lands, Texas A&M and the University of Texas negotiated a settlement for the division of the Permanent University Fund which enabled A&M to receive one-third of the revenue. This guaranteed wealth enabled A&M to expand. Enrollment increased even during the Great Depression, as student cooperative housing projects enabled the students to attend the school at low costs. During the Depression, as professors were forced to accept a 25% pay cut, the Board of Directors partially rescinded its order against female enrollment, allowing no more than at a time to enroll in the school, and further restricting the group to daughters of professors. Texas A&M expanded