With an endowment of about $750 million, the seminary ranks among the richest in the world.
It is difficult to gauge reaction to the recent guidelines among seminary students and gay priests.
Among the celebrations is the reopening of Saint Peter's Seminary in Cardross, Argyll, in March.
Ratzinger entered the seminary in 1939.
Chinese authorities allow one Protestant seminary per province, as a way to limit the number of pastors and slow the spread of Christianity, which by some estimates may have more than 100 million adherents among China's 1.3 billion people.
Among the country's most prominent institutions are the Universities of Basel (founded 1460), Bern (established as a seminary in 1528 and as a university in 1834), Geneva (founded 1559), Lausanne (founded 1537), and Zürich (founded 1833).
I entered the seminary at age 21.
Kotsyubinsky graduated from Shargorod Seminary in 1880.
He entered the seminary in the fall of 1969.
Bishop McCormack graduated in 1960 from St. John's seminary in Boston, where his schoolmates included at least six men later accused as serial pedophiles, among them the Rev. Paul R. Shanley.
The Vatican closed the seminary on Thursday.
