Douglas MacArthur Elementary School PTA; Page Maintained by Volunteers, not paid social media managers The PTA's mission is to make every child's potential a reality by engaging and empowering families and communities to advocate for all children. As the MacArthur Elementary PTA, we provide support and services to students, teachers and parents at Douglas MacArthur Elementary School in Alexandria, VA. Some support may come in the form of educational enrichment opportunities or resources such as field trips, books, classroom materials, teacher training, and social and community development activities.