The Legislature shall have power to establis [establish] Normal schools, and such different grades of schools, from the primary department to the University, as in their discretion they may deem necessary, and all Professors in said University, or Teachers in said Schools of whatever grade, shall be required to take and subscribe to the oath as prescribed in Article Fifteenth of this Constitution. No Professor or Teacher who fails to comply with the provisions of any law framed in accordance with the provisions of this Section, shall be entitled to receive any portion of the public monies set apart for school purposes.