Arinna Weisman has studied insight meditation since 1979 and has been teaching since 1989. Her root teacher is Ruth Denison who was empowered by the great teacher U Bha Khin. She is the founding teacher of Insight Meditation Center of the Pioneer Valley. She is co-author of the book, A Beginner’s Guide to Insight Meditation and a contributor to Women Practicing Buddhism; American Experiences, edited by Peter Gregory and Susanne Mrozik.

Her dharma practice and teaching have been infused with her political and environmental activism. She was the first out queer teacher with Eric Kolvig to lead insight meditation retreats for the Gay, Lesbian, Bisexual, Transgender, Gender Queer community. She also leads ‘Uncovering the Heart Retreats’ integrating the practice of awareness of the social dynamics of inequity with the dharma practice of liberation.

Katy Wiss began meditating in 1976. In 2002, she shifted to a focus on Vipassana meditation. She has trained in a variety of Spirit Rock's study and practice programs, as well as those at New York Insight Meditation Center and Chuang Yen Monastery. She regularly teaches insight meditation to college students. She is also interested in meditation and chronic illness.