(b) A school board is authorized to excuse pupils enrolled in grades 11 and 12 from engaging in physical education coursesif those pupils request to be excused for any of the following reasons: (1) for ongoing participation in an interscholasticathletic program; (2) to enroll in academic classes which are required for admission to an institution of higher learning, provided that failure to take such classes will result in the pupil being denied admission to the institution of his or herchoice; or (3) to enroll in academic classes which are required for graduation from high school, provided that failure totake such classes will result in the pupil being unable to graduate. A school board may also excuse pupils in grades 9 through 12 enrolled in a marching band program for credit from engaging in physical education courses if those pupils request to be excused for ongoing participation in such marching band program. A school board may also, on a case-by-case basis, excuse pupils in grades 7 through 12 who participate in an interscholastic or extracurricular athletic program from engaging in physical education courses.