He was also a member of the "Nesius" (Presidium) of the Moetzes Gedolei HaTorah of Agudath Israel of America.
[1] He also maintained a personal relationship with each student, being a source of guidance for his choice of higher yeshivas, finding a shidduch, and advice after marriage.
[1] With the passage of time, and as a relatively significant number of alumni graduated from the Telshe yeshiva in Chicago, it added to the reputations of its founders in the world of (New York-based) Agudath Israel of America to which they belong.
While Levin was elevated to a seat on the Moetzes Gedolei HaTorah of Agudath Israel of America, Keller became a member of its "Nesius" (Presidium), a lesser yet still prestigious appointment.
[1] Thus at Agudath Israel's premier event, its annual convention, Keller was frequently one of the official rabbis and rosh yeshivas designated to give official speeches or lectures, such as at the 77th Agudah convention in 1999 (symposium, "Drawing Lines, Drawing Near — Securing The Future Of American Jewry");[4] the 80th Agudah convention in 2002 (plenary session, "What in the World is Going On?