Come on. Surely you thought that already!
I just feel they're not very 'Narnia'. Lewis seems to be inserting a twentieth century school into an otherwise medieval context. And the man turning into a tree is just weird.
Peeps
Well, since the basic theme of PC is turning to faith from a refusal to believe in the supernatural (a Narnia-version of modernism) it's not wholly out of character for the book to include a repressive school. The disconnect comes because we've only been seeing the Telmarines through Caspian's eyes. Caspian, being a prince, would have had a life very different from the average Telmarine. If Miraz was ruling the people tyrannically, repressive schools would have been a handy way for him to keep the next generation of commoners in line with his way of thinking.