My son's pre-school is held in the basement of a church. He is the only disabled child in the class because there is only funding available for 1 P.A. per day. For evacuation purposes there must be a 1:1 person for each child who cannot move independently up the stairs. My understanding is that if the school was on the ground floor the aide could be responsible for 2 disabled children. I'm not sure what the regulations will be once he's in the regular school system. Definitely something I will keep in mind to find out! Yvonne Mommy to 2 year-old triplets: Robert (NDA), Anthony (PVL, CP), and Our Angel, Joseph {April 14/97-Dec. 31/98}. Ottawa, Canada