In the 1840s, the school system was shaped, to a considerable degree, by a series of school acts, beginning with the Common School Act of 1841, which doubled the size of government grants in aid of schools, and introduced compulsory taxes on property as a means of funding elementary schools. In the early 1840s, a General Board of Education was established for the province and consisted of the superintendent and six advisors. By the end of the 1840s, the stage had been set for the centralized administration of schools, with regulations covering organization, classification of teachers, and prescription of textbooks.
One Methodist adherent in particular was key in making a wider view of public education at least a partial reality in his day: Egerton Ryerson, who served as Ontario's superintendent of education from 1844 until 1876. Ryerson was steadfast in his support of a public education system that had a distinctly Christian, but non-denominational, basis.
The Roman Catholic Church established the first English-language Roman Catholic class in Kingston in 1839. From the beginning, the question of separate schools engendered considerable political debate. The Scott Act of 1863 provided more formal recognition and support to Catholic education, allowing for the election of separate school trustees as well as legislative grants to separate schools. The Constitution Act, 1867, confirmed that all provisions in place for denominational schools at the time of Confederation would remain in force and could not be diminished.
Ryerson had rigorously opposed any extension of funding to Roman Catholic grammar (what we now know as secondary) schools, on the grounds that money given to denominational systems would undermine a strong public system. Grammar schools received some public support as early as 1807 but, despite Ryerson's intentions, did not come under effective public control until 1871.