Preslav Literary School

Preslav was captured and burnt by the Byzantine Emperor John I Tzimisces in 972 in the aftermath of Sviatoslav's invasion of Bulgaria.

The school developed the Cyrillic script: Unlike the Churchmen in Ohrid, Preslav scholars were much more dependent upon Greek models and quickly abandoned the Glagolitic scripts in favor of an adaptation of the Greek uncial to the needs of Slavic, which is now known as the Cyrillic alphabet.

In Ravna, an unusually large number of inscriptions in the form of 330 instances of graffiti were found, written in Old Slavonic and in other languages.

[4][5] In the book center of the school, literature in the Old Bulgarian language was created, effectually bringing to an end the so-called trilingual heresy.

[citation needed] In the monasteries were also made translations of the Bible, the Slavonic Josephus, the Antiquities of the Jews, and the Alexander Romance.