Simplify the following text for a Grade 11 native English-speaking person.
Original: Ausonius had a strict upbringing by his aunt and grandmother and received an excellent education , especially in grammar and rhetoric , but said his Greek was not good .
Simplified: Ausonius was given a strict upbringing by his aunt and grandmother , both named Aemilia . He received an excellent education , especially in grammar and rhetoric , but professed that his progress in Greek was unsatisfactory .