Sec. 4. (a) A school psychologist who is not employed or excused from employment as described in section 3(2) of this chapter may not provide services on a private basis to an individual unless the school psychologist receives a referral from one (1) of the following:
(1) A developmental center.
(2) A public school or private school.
(3) A physician licensed under IC 25-22.5.
(4) A health service professional in psychology licensed under IC 25-33-1.
(5) The individual's parent if the individual is an unemancipated minor.
(b) A school psychologist who is endorsed under this chapter may not provide services on a private basis to a student:
(1) who attends a school (including a nonpublic school) to which the school psychologist is assigned; or
(2) whom the school psychologist would normally be expected to serve.