In our milestone 200th episode, CPET founding director Professor Ruth Vinz returns to Teaching Today for a conversation about what endures in teaching—and what she’s learned along the way. Joined by Dr. Roberta Lenger Kang and Dr. Cristina Compton, Ruth reflects on 25 years of CPET, the porousness of spaces that invite real learning, and why teachers need principles they can name and stand behind. From pandemic pivots to scripted curricula to the quiet power of silence in a classroom, this episode is a call to teach with courage, stay honest about what works, and never do it alone. We’re proud to make this content free and accessible to all. If you find value in our episodes, please consider donating to support and sustain our efforts: https://cpet.tc.columbia.edu/giving.html