its got nothing to do with your school, and frankly I'm amazed that anyone even thinks so. If you can't do a 300nm journey without someone holding your hand and planning it all for you then you're in the wrong game.
Anhyoo back to the origonal question
dwshimoda
Have you been to Compton Abbas? its beautiful and well worth a visit, and would fit nicely into a route including the isle of Wight, which also provides some stunning views.
Anything over Suffolk, Norfolk is quite relaxed - no airspace apart from some MATZ's but no LTMA to worry about. Old Buckenham, Fenland, Clacton if you fancy a short strip.
If you are heading East / South East North Weald is a good stop off if you route south of the zones, otherwise Duxford is always a possibilty but you may get distracted by all there is to see!