King's College School is a coeducational private preparatory school for pupils aged 4 to 13 in Cambridge, England, situated on West Road off Grange Road, west of the city centre. It was founded to educate the choristers in the King's College Choir during the 15th century. Although no longer located on College grounds, it remains an integral part of the Chapel's musical tradition and is still governed by and receives some funding from the College. The school is part of the same historic foundation as Eton College. The most recent full integrated Independent Schools Inspectorate (ISI) inspection awarded the grade of "excellent" in all 9 categories.