105 ILCS 5/14C-7
Instruction in courses of subjects included in a program of transitional bilingual education which are not mandatory may be given in a language other than English. In those courses or subjects in which verbalization is not essential to an understanding of the subject matter, including but not necessarily limited to art, music and physical education, English learners shall participate fully with their English-speaking contemporaries in the regular public school classes provided for said subjects. Each school district shall ensure to children enrolled in a program in transitional bilingual education practical and meaningful opportunity to participate fully in the extracurricular activities of the regular public schools in the district.
105 ILCS 5/14C-7