Beginning around the middle of the nineteenth century, the Buddhist clergy attempted to reform the sangha (religious community), particularly as a reaction against Christian missionary activities. In the 1870s, Buddhist activists enlisted the help of an American, Colonel Henry Steele Olcott. An ardent abolitionist in the years leading up to the American Civil War, Olcott cofounded and later became president of the Theosophical Movement, which was organized on a worldwide basis to promote goodwill and to champion the rights of the underprivileged. Shortly after his arrival in Sri Lanka, Olcott organized a Buddhist campaign against British officials and British missionaries. His Buddhist Theosophical Society of Ceylon went on to establish three institutions of higher learning: Ananda College, Mahinda College, and Dharmaraja College. Olcott's society founded these and some 200 lower schools to impart Buddhist education with a strong nationalist bias. Olcott and his society took a special interest in the historical past of the Sinhalese Buddhist kingdoms on the island and managed to persuade the British governor to make Vesak, the chief Buddhist festival, a public holiday.

Data as of October 1988