Seibara Middle School (青薔薇中学校 Seibara Chūgakkō) is the school attended by the main characters of Olympus Pretty Cure.
Located in a large building with a sleek and modern design, the school houses normal classrooms, a laboratory, art studio, library, and a planetarium, as well as having a rooftop accessible to the students who wish to spend spare time there. Outside, there is a large courtyard, a field in which most of the sports clubs tend to train at, and pavilions around the school where the students can go to have their lunches.
The winter uniform for the girls consists of an anti-flash white blazer with dark gray lining over a white long-sleeved dress shirt, with a black cravat fastened with a blue rose pin worn around the collar. For the guys, the blazer has a high collar, with a fake blue rose pinned to the left breast. Guys wear long dark blue pants while girls wear a short, pleated blue skirt with a checker pattern. Both wear standard school shoes in white, and girls are required to wear dark blue socks that end just below the knee.
The most prominently shown clubs are the art club and the cheer squad. Other clubs include the newspaper club, kyudo team, and more. The school also has its own radio station headlined by DJ Rodney Sparks.
Seibara (青薔薇) literally means "blue rose", alluding to the institution's blue rose emblem.