The Longfellow Parent Teacher Association (PTA) is a formal organization composed of parents, teachers, and school staff that aims to facilitate parental participation in a school's activities and overall educational mission. 

The primary purpose of a PTA is to foster collaboration between parents and educators to enhance the educational experience for students. This collaboration can lead to improved academic performance, better communication, and a more cohesive school community.

The PTA performs various functions, including:

1. Advocacy: Advocating for policies and programs that benefit students and schools at the local, state, and national levels.
2. Fundraising: Organizing events and activities to raise funds for school supplies, programs, and projects not covered by the school budget.
3. Event Planning: Coordinating school events such as family nights, educational workshops, and social gatherings to build a sense of community.
4. Volunteer Coordination: Recruiting and organizing volunteers to assist with school activities, classroom support, and special events.
5. Communication: Serving as a liaison between parents and the school administration to facilitate clear and effective communication about school policies, events, and student needs.