I think it's still school holidays the following week ( French holidays are staggered according to district). Where are you thinking of going - avoid Samoens then as it was a total overrun nightmare when we went and some French idiot skiied right into me causing my back to seize up and stopping my skiing for the rest of the trip.
Montgenevre was practically empty at Easter last year and we were told that even at Feb half term it's not particularly busy, ditto have skiied at Serre Chevalier at Feb half term and it was fine, but am never going back to Samoens which is a shame as hotel was lovely.
The first week of March gets really busy, i would aim for the 2nd or 3rd week of March. This year loads of people book for the first week of March thinking it will be quiet and schools are back. It was just as busy as Feb Half term. Hope this helps.