Following her graduation from Brandeis University, she became initially a student and then a teacher of transcendental meditation (TM). Among the highlights of her 15-year career was bringing the TM program into the high school system of Miami, Florida, in the early '70s. She became a syndicated columnist & worked with the EPA to develop a meditation program for its employees. In 1986, Rosetree left the TM movement and began teaching independently.