The Church Mission School (CMS), officially known as the CMS Government Boys Higher Secondary School, is a public school situated in Karachi, Sindh, Pakistan. It was established in 1854 by Colonel Henry W. Preedy as the Free School. Prior to its nationalization in 1971, CMS was administered by Christ Church. Over the years, it has been a prominent educational institution in the city, producing notable alumni such as Muhammad Ali Jinnah, the statesman and founder of Pakistan, as well as cricketers like Intikhab Alam, Mushtaq Mohammad, and Javed Miandad. The school complex now houses several institutions, including CMS Primary School, CMS Secondary School, and others.