Roland Park is an all-girls school that is considered a rival to Bryn Mawr, especially when it comes to athletics. Twice an academic year, once in the fall and once in the spring, RPCS and Bryn Mawr hold Spirit Weeks, during which the two schools play games against each other in sports such as field hockey and lacrosse. During the school days of these weeks, students wear costumes in addition to the uniform skirt. Each day of the week has a theme. For instance, if the theme is tropical, then students wear leis, Hawaiian shirts and such. On the final day of Spirit Week, the theme is always school spirit. The RPCS 'Reds' wear red and the Bryn 'Mawrtians' wear green and yellow.