Application For Letters Of Administration. There are no formal requirements when making a letter of instruction.Plan for your future with confidence. Also fill out the certificate of service with the date on which you intend to mail a copy to the opposing side and sign it. The certificate of service is. A Notice legally opens a school, which must remain in continuous operation with enrolled students until the Chief Administrator closes the home school. It shall be the Vendor's responsibility to read this entire document; review all enclosures, attachments, and any. It shall be the Vendor's responsibility to read this entire document; review all enclosures, attachments, and any. Address (Dirección):. City (Ciudad): State (Estado):______ Zip (Código Postal).