St Piran's is a prep school located on Gringer Hill in Maidenhead, Berkshire, England.

[2] Up to this time, it was among a group of preparatory schools – which included Stubbington House School and Eastman's Royal Naval Academy – that maintained strong connections with the Royal Navy.

[3] In that year, 1919, the school was bought by Major Vernon Seymour Bryant who renamed it St Piran's.

[2] After becoming an educational trust in 1972, the school became co-educational in 1993, and boarding ended the same year.

In 2008 a new geography room and lower school hall were completed.