Simplify the following text for a Grade 10 native English-speaking person.
Original: This double foundation was the model for Eton College and King 's College , Cambridge some 50 years later ( a sod of earth and a number of scholars from Winchester were sent to Eton for its foundation ) , and for Westminster School , Christ Church , Oxford and Trinity College , Cambridge in Tudor times .
Simplified: This was the model for Eton College and King 's College , Cambridge 50 years later and for Westminster School , Christ Church , Oxford and Trinity College , Cambridge in Tudor times .