Mentors are required by statue to participate in a mentor training/orientation.

TAC §228.35 (f)  Mentors, cooperating teachers, and site supervisors. In order to support a new educator and to increase educator retention, an EPP shall collaborate with the campus or district administrator to assign each candidate a mentor during the candidate's internship, assign a cooperating teacher during the candidate's clinical teaching experience, or assign a site supervisor during the candidate's practicum. If an individual who meets the certification category and/or experience criteria for a cooperating teacher, mentor, or site supervisor is not available, the EPP and campus or district administrator shall assign an individual who most closely meets the criteria and document the reason for selecting an individual that does not meet the criteria. The EPP is responsible for providing mentor, cooperating teacher, and/or site supervisor training that relies on scientifically-based research, but the program may allow the training to be provided by a school, district, or regional education service center if properly documented.