It was during the time that Archbishop [[Archbishop]] Grigory Gregory (Postnikov) ]] was the ruling [[bishop]] of the Kazan Diocese (1848 to 1856) that the Academy received an old library from the [[Solovetsky Monastery]] on the White Sea. This acquistion enriched the academy’s library greatly. Later, it was under the tenure of Bp. [[Anthony (Khrapovitsky) of Kiev|Anthony (Khrapovitsky)]] as [[rector]] (1895 to 1900) that the theological education at the academy reached its fullest flower.

The Kazan Academy produced more than eighty students who later were consecrated bishops, many who became [[martyr]]s in the twentieth century. Among these martyred bishops were: the rector of the academy Metr. Anatoly Anatolius (Grisyuk); Abps. Athanasy Athanasous (Malinin), Victor (Ostrovidov), Gavrill Gabriel (Abolimov), German (Ryashentsev), and Gury Gurias (Stepanov); and Bps. Ioasaf Joasaph (Udalov), Juenaly Juenal (Maslovsky), Ioann John (Poyarkov), Iov Job (Rogozhin), and many others.

In September 1997, theological eduction returned to the Kazan Diocese as the Kazan Theological School was opened. The school was later reorganized as the Kazan Theological Seminary. The seminary has produced a five-year long theological course of study that provides educated clergy for the Kazan diocese as well as many neighboring regions.