From the TRU website:
TRU is a framework for characterizing powerful learning environments in crisp and actionable ways. It provides a straightforward and accessible language for discussing what happens (and should happen) in classrooms, in professional preparation and Professional Development (PD). TRU is consistent with what we know to be good practice, and it focuses classroom and administrative attention on what counts in learning. What that means, in particular, is that high-quality instruction and PD will be consistent with TRU and that if we adopt this framework and language, parallels in instruction across disciplines will be clear.
TRU Material developed by the TRU research group at the University of California, Berkeley Graduate School of Education