French School and Place to live

Hello, my name is Vidura from Sri Lanka, I speak Sinhala, and English and I got a work offer and planning to come to Brussels in early May 2021. my office is in Saint-Gilles, Belgium. I'm married with one son(8 years old) and one girl (1 year old) and they only speak Sinhala(and a little bit of English).
My first concern is the school (primary) for my son. I'm looking for a public school taking into account these points:
-I prefer french school
-I would like to be not so far from Saint-Gilles but prioritizing school and social life.
-I'm not thinking about international schools as they are very expensive.
-Place where have reasonable apartment rental too.
What do you suggest? Where would be the best place to live according to these ideas?
Regards

Alejandro

Hard area to get a decent school place. Look east to Etterbeek and ensure the scho is one of nearest to where you live.
Saint Stanislas, Sainte Anne, Colombe de la Paix, la Farandole or Saint Michel.