For "Les Trois Collines" in Mougins le Haut:

Take the road to Vallauris in the Valmasque (at the roundabout on the Mougins Antibes road)

Follow the signs for Mougins le Haut.

Once you are on the "rue de St Antoine", follow the signs for "Les Trois Collines" (two right turns)

The school is located on allée des Séquoias.