It had a coeducational sixth form and shared teaching facilities and various A Level courses with Clarendon House Grammar School.

Prior to that, the library had been the school chapel, as evidenced by the amount of stained glass windows situated quite high up.

Most of these entrances were covered up (now underneath the playing fields) but the last ones are still visible on the lower playground and have been used recently by the local fire authorities for training purposes.

[3] The school had approximately 813 students including the 262 students in the sixth form, accepting only boys in years 7–11, and a limited number of girls in the sixth form, mostly drawn from the Isle of Thanet that encompasses Ramsgate, Broadstairs and Margate, but some from as far away as Herne Bay and the Whitstable area.

The school had the highest rate of GCSE and A level passes in Kent, 73% of students taking their GCSEs last year got A* to C. The school maintained a strict system of uniform throughout all years, including the sixth form.

The results from all of these fixtures were tallied at the end of each year to determine the winner of the Cock House Trophy.

Also, sports day events and general achievement contribute towards house points totals.

The Federation became a new Converter Academy in January 2011, bringing greater control over admissions, site and buildings, curriculum development and much-needed additional income.

[5] Chatham House has the sixth highest number of Who's Who entries for state schools.