On average, each Ivy school has more than 35 varsity teams. All eight are in the top 20 for number of sports offered for both men and women among Division I schools. Unlike most Division I athletic conferences, the Ivy League prohibits the granting of athletic scholarships; all scholarships awarded are need-based (financial aid). In addition, the Ivies have a rigid policy against redshirting, even for medical reasons; an athlete loses a year of eligibility for every year enrolled at an Ivy institution. Additionally, the Ivies prohibit graduate students from participating in intercollegiate athletics, even if they have remaining athletic eligibility. The only exception to the ban on graduate students is that seniors graduating in 2021 will be allowed to play at their current institutions as graduate students in 2021–22. This was a one-time-only response to the Ivies shutting down most intercollegiate athletics in 2020–21 due to COVID-19. Ivy League teams' non-league games are often against the members of the Patriot League, which have similar academic standards and athletic scholarship policies (although unlike the Ivies, the Patriot League allows both redshirting and play by eligible graduate students).