Grantley College was founded in 1964 by Mr. Grant Levay who realised the need for a school that offered specialised education for high school students with learning difficulties.

The school has always been situated in Parktown, an old well-established suburb in Johannesburg. The school moved to its present location in 1990 when the then Transvaal Department of Education transferred the National School of Arts building by deed of donation to Grantley College, thus enabling the College for the first time to have a permanent educational facility.

Grantley College has a proud heritage and fine reputation of service to a community of families who desire to give their children a second chance at success. It is an independent, co-educational, non-profit school which offers mainstream education to children who have a learning disability and/or ADD/ADHD, and are experiencing a gap between their potential and actual achievement.