The state plan for career and technical education may include such matters as are required to be included in state plans by federal law and rules and regulations. The state plan shall not include any provision which is in conflict with the provisions of this act or any other law of this state. The state plan, in addition to other matters which it may contain, may include such additional items as are permitted to be included by this act. The state plan, or substantive changes, supplements or revisions of any part or all thereof, shall not be approved by the state board until a proposal therefor has been issued by the state board and such proposal has been distributed to each board and to other interested persons, and until reasonable public notice has been given, and all boards as well as other interested persons have been given a reasonable opportunity for public hearing. Rules and regulations adopted by the state board shall be adopted in accordance with law.