Hi
The first thing we need to understand if you come here with working visas or as immigrants?
We're here with working visa, so we are eligible to send kids to English Schools which is 50% English and 50% French.
We've sent them to French school for the first 6 months, then we decided to switch them to English schools.
I'd say kids learn Languages fast just like a sponge, to us is all about the child's health mentally/ psychologically, not academically. So it depends on your focus.
If you enter Quebec as immigrants, you could only apply for English schools if:
1) You or your family or the kid's sibling have attended English schools in Canada,
2) You are on working visa
3) The child has been coded/certificated by medical practices that he or she is unable to attend a French school.
I do have some friends here apply for English school while seeking the move to other provinces after landing here or just keep extending their visa to obtain the eligibility.