Starfleet Technical Services Academy, also known as the Tech Services Academy, was a training facility located on Mars designated for enlisted Starfleet personnel who chose not to attend Starfleet Academy. (LD: "Reflections")
Alfonse Pacelli graduated from this academy on stardate 40021.4. (TNG: "Eye of the Beholder")
An okudagram readout of Pacelli's personnel file was displayed on a viewscreen that Deanna Troi was studying. Some of the facts could be called into question since she was involved in a very detailed hallucination when the data was shown.