Small and quiet, or just small? Trying to get a feel for St. Paul's Model School in Yapral

Very early question, our son isn't one yet. We're in KPHB, but my parents live in Sainikpuri and we're there most weekends, so the schools on that side keep coming up in family conversations. St.Paul's Model School in Yapral is the one my mother likes, because it looks 'small and homely' from the road. State Board, nursery to 5. If you know it, roughly how big is a nursery class, and how many teachers or ayahs are with the children? I'd rather know what 'small' means in practice than go by the gate.