Are you looking for some international preschool ? if so, there is Woodland, right on the other side of the Ap Lei Chau bridge. There is also Victoria Kindergarden and IMS in South Horizons.
Now... Larvotto has no bus service yet, you have to go to Lei Tung, or take a taxi. Have you visited yet ?
We live in SOuth Horizons and it's a very convenient place, shopping mall, schools, bus service, playgrounds, club house, 5 mn by bus from Larvotto/Sham Wan Towers.
Sham Wan Towers is a bit easier to go to, but the appartments are much smaller (though a few landlords have transformed 2 flats in one).
Good luck !