Rabbi Knapel holds a B.A. from Yeshiva University, and an M.A. from Bernard Revel at Yeshiva University. He obtained his smicha from Yeshiva University. He served as Assistant Principal and taught at Hillel Yeshiva High School in Deal, New Jersey, for 9 years. He then made aliya with his family, and since then has taught at Shaalvim for Women and various Midrashot including Shaalvim for Women, Midreshet Moria and Amit.