Many small living room revolve around tricking the eye into making the area appear more spacious. Such strategies can transform an area that feels cramped and claustrophobic into one that feels cozy and aesthetically pleasing.
I like the idea of the wood like fence. You could have one pannel for every child in your classroom and then use it as a growth chart for toddlers. When the child moves up or leaves the centre you can give it to the parents. Use Pallet wood.