The Beis Medrash is an advanced post-High School Yeshiva program. Three levels of Iyun Shiurim are given daily, and the afternoon and night sedarim are devoted to Bekius. The daily schedule includes two weekly Mussar Shmuessin. The student body is composed of WITS graduates who have chosen to stay on in the Yeshiva Gedolah, graduates from other Yeshiva High Schools, and Talmidim from Yeshivas in Eretz Yisroel who have returned to the United States to continue their learning. Yeshiva Gedolah students may attend university part time. Credits earned within the Yeshivah Gedolah program are transferable to the Marquette University program in Milwaukee and other participating colleges.

The presence of the Yeshiva Gedolah greatly enhances a high school student's experience at WITS. Through their devotion to Torah learning and living - including the time they spend as Chavrusas with their younger counterparts in the high school evening Seder - they serve as positive role models for the high school students to emulate.

In addition, other opportunities for close association between the Beis Medrash and High School students occur during meals, in the dorm, and during free time. The WITS Beis Medrash takes its role as "big brothers" seriously. They recognize the important difference their relationship can make in the development of a younger boy and are prepared to do all they can to enrich the total experience of the high school students.