Then he attended Claremont School of Theology and obtained a M.A. in 1981. Park finally received a Ph.D. at Graduate Theological Union in 1985; his dissertation there discussed minjung theology.
Following his time at Claremont School of Theology, which led to an M.A. degree in 1981, Park continued his academic journey by obtaining a Ph.D. from the Graduate Theological Union in 1985; his dissertation centered on minjung theology.