Search led by IndySchool Consultancy About Talcott Mountain Academy. Talcott Mountain Academy (TMA) is an independent Kindergarten through Grade 8 school located in Avon, Connecticut, and part of the Talcott Mountain Science Center, Academy, & Research Institute. Founded in 1983, the Academy serves intellectually curious and advanced learners through a highly individualized STEM focused education rooted in inquiry, creativity, and experiential learning. With exceptionally small class sizes, direct access to laboratories and observatories, and a close-knit community, TMA is widely recognized for its distinctive approach to gifted education. Position Overview.