Imperial Service College

{{Short description|English independent school}}{{Infobox school

| former_name = St. Mark's School

| established = 1845

| closed = 1942 (merged with Haileybury to become Haileybury and Imperial Service College)

}}

{{Use dmy dates|date=April 2022}}

{{Use British English|date=February 2023}}

The Imperial Service College (ISC) was an English independent school based in Windsor, originally known as St. Mark's School when it was founded in 1845.{{cite web|url=http://www.thamesweb.co.uk/windsor/windsorhistory/isc.html|title=Imperial Service College and Haileybury Junior School|publisher=Thames Web}}{{cite web|url=http://theroyalwindsorforum.yuku.com/topic/1788/St-Marks-School-PreImperial-Service-College|title=St Marks School (Pre-Imperial Service College)|date=26 January 2012 |publisher=Royal Windsor Forum}}

In 1906, St Mark’s School absorbed boys from the former United Services College, which had failed. In 1911, St Mark’s was also in difficulties, and after securing support from the Imperial Service College Trust it was renamed as Imperial Service College, St Mark’s. On the death of Lord Kitchener in 1916, Prince Alexander of Teck, soon to become Alexander Cambridge, 1st Earl of Athlone, launched a public appeal for a permanent endowment of the school in Kitchener’s memory. He noted that the Imperial Service College had been founded “for the purpose of providing a public school education for the Sons of Officers of limited means belonging to the Navy, Army, and Higher Civil Services.”“Prince Alexander of Teck in Memory of Lord Kitchener” in Land and Water, Volume 9 (Country Gentleman Publishing Company, 1916), p. 23

In 1942, the school merged with Haileybury to form Haileybury and Imperial Service College.

During the 1950s, part of the site was the home of the Royal Horse Guards Light Aid Detachment Royal Electrical and Mechanical Engineers (LAD REME RHG), while the school’s Kipling Memorial Building (1939) was occupied by the Royal Borough of New Windsor Council.

The area is now being redeveloped as offices.