Schools for kids (Montpellier)

We are moving to Montpellier in late October, from Canada and I'm looking for schools. I am aware of some of the schools, but wonder if anyone can recommend or give their experience or knowledge of any of the following schools:

Ecole St François Regis (Catholic Private French school)
Ecole Eridan (International bilingual)
Ecole Privee Bilingue Internationale (same as above)

I just want to know if anyone can offer first hand info on any of them...

Alternately, can anyone provide some info on the public schools (primary and college) in the Castelnau-de-Lez district?