Gowin was invited by Peter Bunnell in 1973 to teach photography at Princeton University. Over the next 25 years he both taught new students and, by his own admission, continually learned from those he taught. At the end of each academic year he asked his students to contribute one photograph to a portfolio that was open to critique by all of the students; he intentionally included one of his own photographs as a reminder that, while a teacher, "he was just another humble student of art."