Ill. Admin. Code tit. 23, § 1.650
Official transcripts of credits earned are issued by institutions of higher education. In determining whether an individual meets the requirements for a particular assignment, a school district shall not rely upon any transcript that does not bear the seal and the signature of the responsible officer of the institution issuing the transcript.
(Source: Amended at 28 Ill. Reg. 8486, effective June 1, 2004)