Ill. Admin. Code tit. 23, § 226.135
In addition to the requirements set forth in Sections 226.110 and 226.120, the district shall ensure that a psychological evaluation has been conducted and a recommendation for eligibility made by a school psychologist for any child who is suspected of or determined to have an intellectual disability.
(Source: Amended at 40 Ill. Reg. 2220, effective January 13, 2016)