“In some of choice of school cases, decisions that were made by parents prior to separation are a factor that has been considered: Askalan v. Taleb, 2012 ONSC 4746, at para. 32. This is so because such decisions may be considered evidence of what the parents thought was in the child’s best interest at the time: Woodhouse v. Woodhouse (1996), 1996 CanLII 902 (ON CA), 29 O.R. (3d) 417 at 431.”