Cal. Health & Saf. Code § 121505
The certificate shall not be required for a person who is subject to an order made pursuant to subdivision (a) of Section 121485, if the parent, guardian, or other adult who has assumed responsibility for his or her care and custody in case of a minor, or the person seeking admission, if an emancipated minor, provides to the governing authority an affidavit stating that the examination required to obtain the certificate is contrary to his or her beliefs. If at any time there should be probable cause to believe that the person is afflicted with active tuberculosis, he or she may be excluded from the school or other institution listed in Section 121485 until the governing board is satisfied that he or she is not so afflicted.
Ca. Health and Saf. Code § 121505