No provision of section 10-206 or 10-214 shall be construed to require any pupil to undergo a physical or medical examination or treatment, or to be compelled to receive medical instruction, if the parent or legal guardian of such pupil or the pupil, if such pupil is an emancipated minor or is eighteen years of age or older, in writing, notifies the teacher or principal or other person in charge of such pupil that such parent or guardian or pupil objects, on religious grounds, to such physical or medical examination or treatment or medical instruction.