[1] It was founded on 20 September 1909 with 10 students at Lagos Island, adjacent to Tafawa Balewa Square.

[2] As a result, some authors regard Henry Carr as the "architect of King's College".

The pioneer students included J.C. Vaughan, Isaac Ladipo Oluwole, Frank Macaulay, Daniel Adeniyi Onojobi, Herbert Mills (from the Gold Coast), O.A.

The philosophy of King's School was "to provide for the youth of the colony a higher general education than that supplied by the existing Schools, to prepare them for Matriculation Examination of the University of London and to give a useful course of Study to those who intend to qualify for Professional life or to enter Government or Mercantile service.

King's College is now one of 104 unity schools in Nigeria managed by the federal government to bring together children from different geographic, ethnic, and socio-economic backgrounds to build Nigeria's future, especially in the aftermath of the Biafran War.

The former PKC, Otunba 'Dele Olapeju, assumed office in January, 2010 and bowed out of service in November, 2015.