THE MASSACHUSETTS TEACHERS ASSOCIATION IS A MEMBER-DRIVEN ORGANIZATION, GOVERNED BY DEMOCRATIC PRINCIPLES, THAT ACCEPTS AND SUPPORTS THE INTERDEPENDENCE OF PROFESSIONALS AND UNIONISM. THE MTA PROMOTES THE USE OF ITS MEMBERS' COLLECTIVE POWERS TO ADVANCE THEIR PROFESSIONAL AND ECONOMIC INTERESTS. THE MTA IS COMMITTED TO HUMAN AND CIVIL RIGHTS AND ADVOCATES FOR QUALITY PUBLIC EDUCATION IN AN ENVIRON…