The fund, called the SCHOOL FUND, shall remain a perpetual fund, the interest of which shall be inviolably appropriated to the support and encouragement of the public schools throughout the state, and for the equal benefit of all the people thereof. The value and amount of said fund shall be ascertained in such manner as the general assembly may prescribe, published, and recorded in the comptroller's office; and no law shall ever be made, authorizing such fund to be diverted to any other use than the encouragement and support of public schools, among the several school societies, as justice and equity shall require.