Does St Vladimir’s Orthodox Theological Seminary, as well as all Churches/organizations under the jurisdiction of the OCA, teach ecumenism and modernism?
The OCA—and by extension St Vladimir’s Seminary—is committed to bearing witness to the fullness of God’s Truth and revelation as delivered to the Orthodox Christian Church in whatever setting she may find herself—including but surely not limited to interfaith gatherings—and to anyone and everyone who would hear the fullness of God’s Truth and revelation.
Also, the Church does not teach “modernism,” however that is defined. [And by “modernism” I assume that you are not referring to the use of English or other such non-doctrinal matters.]
The Church teaches the Gospel of Jesus Christ, Who came into the world to save sinners.