to achieve three first place Forbes rankings. In 2012, 2015, and 2016, Williams placed second. In 2017 and 2018, Williams fell out of the top ten (to 13th and 12th, respectively), before dropping further to 19th in 2019. Williams ranked 18th after Forbes changed their ranking methodology to emphasize alumni salaries and graduation debt in 2021. In the Forbes 2022 College Rankings, Williams College rose to 7th. Williams has been ranked first in [[U.S. News & World Report Best Colleges Ranking|U.S. News & World Report's rankings]] of Best National Liberal Arts Colleges every year since 2004, and has been in the top three every year since the rankings were created in 1984. (This list does not include universities: unlike Forbes, U.S. News & World Report ranks universities and liberal arts colleges on separate lists.) Winter Study Williams follows a 4-1-4 schedule, with the month of January dedicated to "Winter Study", a time when students take one course (or more) on campus or engage in an international program, an internship, or independent research project. A significant number of Winter Study courses are taught by Williams College alumni, and feature topics otherwise not covered in a traditional liberal arts curriculum—such as financial accounting, entrepreneurship, journalism, and yoga. Winter Study courses change yearly—the catalog features international programs in public health (where students travel to Nicaragua or Liberia), cultural immersion (for example, programs in Morocco and France), and political work (for example, a three-week internship program in the government of the Republic of Georgia). Oxbridge tutorials Certain portions of the Williams education are modeled after the tutorial systems at the universities of Oxford and Cambridge. Although tutorials at Williams were originally aimed at upperclassmen, the faculty voted in 2001 to expand the tutorial program. There is now a diverse offering of tutorial courses that span many disciplines, including math and sciences, and cater to students of all class years. In 2009–2010 alone, 62 tutorials were offered in 21 departments. Enrollment for tutorials is capped at 10 students, who are then divided into five pairs that each meet separately with the professor once a week. Each week, one student in each tutorial pair writes and presents a 5–7-page paper while the other student writes a critique response. The same pair reverses roles for the next week. The professor takes a more limited role than in a traditional lecture class and usually allows the students to