Wis. Admin. Code § SPS 409.02
When a placement service is offered or advertised by a school, the following minimum requirements must be observed:
(2) Documented evidence of student referrals must be maintained and should include, but not be limited to the following:
History: Cr. Register, December, 1972, No. 204, eff. 1-1-73; am. (1), (2) (c), Register, October, 1997, No. 502, eff. 12-1-97.