The Statutes of Iona, passed in Scotland in 1609, required that Highland Scottish clan chiefs send their heirs to Lowland Scotland to be educated in English-speaking Protestant schools. As a result, some clans, such as the MacDonalds of Sleat and the MacLeods of Harris, adopted the new religion. Other clans, notably the MacLeans of Morvern & Mull, MacDonalds of Clanranald, Keppoch, Glengarry, and Glencoe, remained resolutely Roman Catholic.