Tthe Catholic Church operates the world's largest non-governmental school system. In 2016, the church supported 43,800 secondary schools, and 95,200 primary schools.
Thirty-six percent of private school students were enrolled in Catholic schools, 13 percent were enrolled in conservative Christian schools, 10 percent were enrolled in affiliated religious schools, 16 percent were enrolled in unaffiliated religious schools, and 24 percent were enrolled in nonsectarian schools.
