[1] He is a prominent figure in the yeshiva world and speaks annually at the Torah Umesorah - National Society for Hebrew Day Schools convention.

He also serves on the rabbinic advisory committee of Torah Umesorah.

Harris would complete his studies at the yeshiva in 1973 after receiving his rabbinic ordination.

In 1974, he co-founded the school's first external affiliate branch, the Talmudical Institute of Upstate New York, together with Rabbi Menachem Davidowitz.

[2] In the fall of 1988, Harris also founded Mesivta Tiferes Yisroel, a branch of the Chofetz Chaim network.