As well as directing over 200 shows and managing at least twelve theaters throughout his career, Frankel taught acting, writing and directing. His last stage was the Gene Frankel Theatre and Film Workshop at 24 Bond Street in Greenwich Village. Frankel said that the heart of successful acting was, "Truth. I don't let my actors tell lies. The camera doesn't lie, the stage doesn't let you lie." He was a visiting professor in theater at various institutions of higher learning including Columbia University, Boston College, and New York University.