This form is effective for one (1) year from date of signature. Visit our web page at esd.maricopa.gov.Use this form to designate an agent to act on your behalf on any matter dealing with the valuation and classification of your property. This form is required for each college institution you attend. Student Admissions Application (PDF). Want to become a student? Find out how to submit a public records request to the MCAO Custodian of Records.