The “designated state official” for the State shall be the Secretary of Education. The Secretary of Education shall enter into contracts pursuant to this subchapter only with the approval of the State Board of Education. True copies of all contracts made on behalf of this State pursuant to the agreement set forth in § 8213 of this title shall be placed on file in the office of the Secretary of Education, in the office of the Secretary of State and in the office of the chief state school officer in such other state as is party to the contract. Reference to the existence of such contracts, including at least a list of states involved and the teaching fields or certificates referred to in each state, shall be published regularly in such certification manuals as may from time to time be published by the Department of Education.