The TPR is a database maintained by the Federal Motor Carrier Safety Administration (FMCSA) that lists the names of all training providers that have been approved by FMCSA.
Beginning on February 7, 2022, the TPR is your primary source for finding an approved training provider when you’re seeking to obtain a CDL or a Hazardous Materials (H), Passenger (P), or School Bus (S) endorsement.
You can learn more about the TPR here: https://tpr.fmcsa.dot.gov/.