you can seek info from Nosybe at the facebook page
If you speak English there is also the American School
It is expensive but the best advantage since English is most spoken Language in the world, French is down around 8th and is limited to a few countries mostly Africa where progress is a couple of generations away.  I am encouraging my daughters to learn Chinese, the next widely spoken language but mostly in China and a few other countries.Â
you might consider schools in Mauritius