[3] Although for centuries a boys-only grammar school, "Kings" is now mixed and has a junior department in Madeley House.

As part of the wider chapter of Peterborough Cathedral, the headteacher retains his own stall in the quire today.

[7][8] There are also two state-funded Roman Catholic choir schools: St Edward's College in Liverpool and the London Oratory.

A fatal accident at the railway crossing caused a change of heart, and the current site was purchased instead on Park Road, which the Peterborough Land Company was in the process of developing.

During the Second World War several staff, including the headmaster, joined the armed forces; others were heavily involved in the Home Guard (which used the school facilities for meetings and training), fire-watching and Digging for Victory, on the land then owned in Park Crescent.

The staff and the 288 pupils dug trenches on the School Field and at one point a downed German Junkers Ju 88 bomber was exhibited to raise funds for ‘Weapons Week’.

Harrison,[10] the entire school would traipse up Park Road for morning service at All Saint's C-of-E church.

School Inspectors declared this practice to be in contravention of the Education Act 1944's requirement to hold the daily assembly on-site.

Also in the 1960s, teaching included Saturday morning classes; and boarders were obliged to attend Sunday matins and/or evensong at the Cathedral.

[11] Many boarders had parents in the forces and or the colonial services; the very low fees[12] being more affordable than at public schools.

[clarification needed] The school's Junior Department opened in September 2011 for "key stage two" pupils (Ages 7 – 11), including cathedral choristers.

[29] Given the school's high GCSE pass rate,[30] the majority of pupils proceed into the sixth form.

Growing numbers[clarification needed] led to the event being held next at The Broadway Theatre,[38] and in 2007 it moved again to KingsGate Community Church's building in Parnwell.

A comprehensive history of former Archididascali and Headmasters titled 'Mortarboards and Mitres' was undertaken jointly by Mr. Trevor Elliott M.A.

[41] Headmasters of the Cathedral Grammar School endowed by King Henry VIII: Former pupils are known as Old Petriburgians.

[3] In 2003, Timothy Coldwell, a one-time Head of Physics, was convicted for downloading indecent images of children.

[49] His successor was Darren Ayling, formerly Senior Deputy Head (Academic) at the Ipswich School in Suffolk.

In 2017, Andrew Brown, former governor was convicted of possessing indecent images and films of children as young as 3.