The Parent Teacher Association, (PTA) of the Maynooth Post Primary school, serves as a communication interface between the parents and guardians of the attending pupils and the staff and functions of the school. The main purpose of the PTA is to help the MPPS in the provision of the best, safest and healthiest possible learning environment for the attending students. The PTA exercises its function in accordance with the principals enshrined in its constitution. etc.

The PTA Committee is comprised of two members of school staff, currently Principal and Vice Principal and parents/guardians who have kindly volunteered their time and their support towards the activities of the association. An executive Committee of Chairperson, Secretary, Treasurer and their respective assistants, are elected into office at the AGM, which is held at the start of the school year. The PTA Committee attend at scheduled monthly meetings at the school during the school year.

Fundraising: This is a very important function, which provides the association with the necessary funds to provide or engage in a variety of activities, which are not otherwise funded by school budgets or the board of education. Recent successful fundraising events include a Golf Classic, which was held in the Carton golf course and, more recently, the introduction of a family Voluntary Subscription scheme.