Which are the best British International Schools in Athens?

Hi there, I am moving to Athens later this year (2023) and bringing my 16 year old son with me. I would love any feedback, please, on the British International Schools in Athens as the reviews I am reading are quite mixed and so some on the ground experiences would be amazing!  If anyone has any feedback, good or bad, on St Lawrence's, Byron College or St Catherine's I would be SO grateful. Many thanks in advance, best wishes Nicola