According to the MEA
Per MEA governance documents, the MEA active membership fee shall be one and one-half percent (1.5%) of each members contractual salary/wage for the prior year ending June 30 earned for work in a bargaining unit represented by MEA or one of its affiliates provided that the active membership fee shall not exceed six hundred forty dollars ($640). but I know there are other fees and charges attached.
MEA Dues information
Its a considerable chunk of change when you realize how many teachers there are.