By this time, he had become a leading art critic, and was invited by Yu to teach at the department of theatrical arts and the Chinese University of Culture. Yu advised him not to go to extremes, and not to take on too many things at once.
俞大綱非常賞識他的才華，聘請他到中國文化大學的戲劇系教書。楚戈因年輕氣盛，文筆犀利，曾經得罪過不少人，在俞大綱「與其破壞、不如建設」的規勸下，他寫的藝評中肯、客觀多了，對自己不甚瞭解的事物，也儘量避而不談。