The Omnibus T-Scale measures teachers’ trust in principals, clients (both parents and students), and colleagues. It defines trust as consisting of five factors: benevolence, reliability, competence, honesty, and openness. This survey contains 26 Likert items and has been tested in elementary schools in the U.S. Midwest. It can be used free of charge; the scoring key is online at https://edtechbooks.org/-FYEx .