Colorado PTA Parent Teacher Association. Part of National PTA. National PTA® comprises millions of families, students, teachers, administrators, and business and community leaders devoted to the educational success of children and the promotion of parent involvement in schools. PTA is a registered 501(c)(3) nonprofit association that prides itself on being a powerful voice for all children, a relevant resource for families and communities, and a strong advocate for public education. Membership in PTA is open to anyone who wants to be involved and make a difference for the education, health, and welfare of children and youth.