While all cadets are required to take four years of ROTC, accepting a commission in the armed forces is optional. While over 50 percent of VMI graduates are commissioned each year, the VMI Board of Visitors has set a goal of having 70 percent of VMI cadets take a commission. The VMI class of 2017 graduated 300 cadets, 172 (or 57 percent) of whom were commissioned as officers in the United States military. VMI alumni include more than 285 general and flag officers, including the first five-star General of the Army, George Marshall; seven recipients of the highest U.S. military decoration, the Medal of Honor; and more than 80 recipients of the second-highest awards, the Distinguished Service Cross and Navy Cross. VMI offers ROTC programs for four U.S. military branches (Army, Navy, Marine Corps and Air Force). VMI has graduated more Army generals than any ROTC program in the United States. The following table lists U.S. four-star generals who graduated from VMI. It does not list alumni who did not graduate from the school, such as General George S. Patton and General Sam S. Walker, and the many VMI graduates who served or still serve as four-star generals in foreign nations such as Thailand, China, and Taiwan. Prospective cadets must be between 16 and 22 years of age. They must be unmarried, and have no legal dependents, physically fit for enrollment in the Reserve Officer Training Corps (ROTC), and be graduates of an accredited secondary school or have completed an approved homeschool curriculum. The Class of 2022 at VMI had an average high school GPA of 3.70 and a mean SAT score of 1210. Eligibility is not restricted to Virginia residents, although it is more difficult to gain an appointment as a non-resident, because VMI has a goal that no more than 45 percent of cadets come from outside Virginia. Virginia residents receive a discount in tuition, as is common at most state-sponsored schools. Total tuition, room & board, and other fees for the 2008–2009 school year was approximately $17,000 for Virginia residents and $34,000 for all others. Of 509 students that matriculated in August 2012, 46 were women. The first Jewish cadet, Moses Jacob Ezekiel, graduated in 1866. While at VMI, Ezekiel fought with the VMI cadets at the Battle of New Market. He became a sculptor and his works are on display at VMI.