Kilgraston School is a private boarding and day school offering primary school education for boys and girls aged from five to twelve years old and girls only from five to eighteen. Boarding is available for girls only aged eight years old and above. The school is centred on a mansion house set in of parkland, at Bridge of Earn, south of Perth. It is the only Catholic boarding secondary school in Scotland and is located within the Diocese of Dunkeld. The school has links with the boys' school Merchiston Castle School in Edinburgh and occasionally co-organises socials and functions together. Kilgraston has thriving music and arts departments, hockey, tennis and swimming academies, and is Scotland's only school with an on-site equestrian centre. In 2013 Kilgraston was ranked fourth in the top Scottish schools by Advanced Highers. In 2015, Kilgraston was named as the Sunday Times top performing independent school for Highers and Advanced Highers 2015. The school has Junior Years (ages 5–12), Senior School (ages 13–16) and Sixth Form. It is a member of the Girls' Schools Association. History Building Kilgraston's earliest records date back to the 13th century where it was called Gilgryston. John Grant, the eldest son of Patrick Grant of Glenlochy, in Strath Spey, Inverness-shire, and whose principal wealth was made in Jamaica, was for several years a member of the Assembly there, becoming an assistant Judge of Jamaica's Supreme Court, and eventually succeeded Thomas French as Chief Justice of that island in January 1783, which office he held until 1790. Also, in 1783, he was confirmed as an armiger by the Lord Lyon King of Arms. Grant purchased, towards the end of the 18th century, from the Murray and Craigie families, the contiguous estates of Kilgraston and Pitcaithly, situated in the east end of the beautiful and rich valley of Strath Earn, and extending over part of the Ochil Hills. He died issueless at Edinburgh on 29 March 1793, and is buried under a marble tablet in St Cuthbert's Churchyard. He was succeeded in his estates by his brother Francis (d. 1819, who built the mansion. The mansion was used as a private home until World War I during which it was used as a hospital. School In 1930 the house and grounds were purchased by the Society of the Sacred Heart and opened as a school with 40 boarders. The Society ran the school as