The school has a 94.6% attendance rate, which is about average for the country. Year 7 and Year 12 will attend School on 3 September and all year groups from the 4 September. Aylesbury Grammar School Walton Road Aylesbury Buckinghamshire HP21 7RP. Contact Details. Founded, 1598 in Aylesbury, Buckinghamshire by Sir Henry Lee, Champion of Queen Elizabeth I., Aylesbury Grammar School celebrated 100 years on the current site in Walton Road in 2007.It is commonly referred to by its students, staff … Telephone: 01296 424781 | Fax: 01296 424783 | Email: