The key here is that Catholics are prioritized over non-Catholics for Catholic schools.
Now you could probably fake a baptismal certificate pretty easily. There are no electronic records from baptisms when I was born (1980's). And if you go out of province they don't check. I was baptized Catholic and I just showed them the cert, they didn't even look at it or write anything down and let my kids in. However that is probably illegal and if you got caught the consequences would likely not be worth the benefits.
I would probably still go for the Kindergarten though as that should get your prioritized over non-catholic out of school transfers which should get you pretty high up the list. Try to find out how many non-Catholics are in the grade 1 and grade 2 classes now to get a feel to the demos in the school in terms of catholics and non-catholics.
|