That's not accurate. All alleged scriptures not in the canon were rejected by St. Athanasius,mwith the exception of certain works like the Shepherd of Hermas, which he noted might be useful for catechesis; later, the Decree of Gelasius specifically identified this work as heretical.
As far as "required reading," goes, this term is a bit misleading. There existed, and exists, in the Orthodox, Catholic and Assyrian churches, and in liturgical Protestant churches, a system called the "lectionary," and there are different lectionaries, but these essentially specify which books are to be read on particular occasions in church, for example, on Easter, at a wedding, or on the 5th sunday after Pentecost. Some books are canonical without being included in the lectionary; the Byzantine Rite liturgy of the Eastern Orthodox and Greek Catholics does not include Revelations, yet these churches do regard it as canonical.
