What term does the U.S. Department of Education use to identify a tenured teacher who exemplifies lifelong learning?

The term used by the U.S. Department of Education to identify a tenured teacher who exemplifies lifelong learning is "Master Teacher." This designation typically indicates that the educator has reached a level of expertise and is highly skilled in their teaching practices. A Master Teacher not only demonstrates exceptional instructional techniques but also commits to continuous professional development and learning. They often serve as models for other teachers, mentoring them and sharing best practices, which can enhance the educational environment and improve student outcomes.

While a "Professional Teacher" suggests a commitment to the profession, it does not specifically convey the advanced level of expertise or the mentoring role that characterizes a Master Teacher. Similarly, the title "Lead Teacher" often refers to a teacher who has additional responsibilities or leadership roles within a school, but this does not inherently denote a focus on lifelong learning. "Teacher Mentor" describes a role focused on guiding and supporting less experienced teachers, but again, it lacks the explicit connection to the recognition of expertise associated with the term "Master Teacher."