The State Superintendent of Education shall prepare, or cause to be prepared, and submit for approval and adoption by the State Board of Education rules and regulations for grading and standardizing all public schools of an elementary and high school grade, also for limiting on the basis of equipment and number of teachers employed, the years and grades of instructions that may be offered in such schools, but such rules and regulations shall not be inconsistent with the provisions of this title or any other statute of this state. He shall also prepare, or cause to be prepared, and submit for approval and adoption by the State Board of Education the minimum requirements for issuing all certificates and diplomas in such schools.