high the American national median. Either of these two statistics may be confounded by the fact that the Jewish population is on average older than other religious groups in the country, with 51% of polled adults over the age of 50 compared to 41% nationally. Older people tend to both have higher income and be more highly educated. By 2016, Modern Orthodox Jews had a median household income of $158,000, while Open Orthodox Jews had a median household income at $185,000 (compared to the American median household income of $59,000 for 2016). As a whole, American and Canadian Jews donate more than $9billion a year to charity. This reflects Jewish traditions of supporting social services as a way of living out the dictates of Jewish law. Most of the charities that benefit are not specifically Jewish organizations. While the median income of Jewish Americans is high, there are still small pockets of poverty. In the New York area, there are approximately 560,000 Jews living in poor or near-poor households, representing about 20% of the New York metropolitan Jewish community. Most affected are children, the elderly, immigrants from the former Soviet Union and Orthodox families. According to analysis by Gallup, American Jews have the highest well-being of any ethnic or religious group in America. The great majority of school-age Jewish students attend public schools, although Jewish day schools and yeshivas are to be found throughout the country. Jewish cultural studies and Hebrew language instruction is also commonly offered at synagogues in the form of supplementary Hebrew schools or Sunday schools. From the early 1900s until the 1950s, quota systems were imposed at elite colleges and universities particularly in the Northeast, as a response to the growing number of children of recent Jewish immigrants; these limited the number of Jewish students accepted, and greatly reduced their previous attendance. Jewish enrollment at Cornell's School of Medicine fell from 40% to 4% between the world wars, and Harvard's fell from 30% to 4%. Before 1945, only a few Jewish professors were permitted as instructors at elite universities. In 1941, for example, antisemitism drove Milton Friedman from a non-tenured assistant professorship at the University of Wisconsin–Madison. Harry Levin became the first Jewish full professor in the Harvard English department in 1943, but the Economics department decided not to hire Paul Samuelson in 1948. Harvard hired its first Jewish biochemists in 1954. According to Clark Kerr,