The Chaldean Babylonian scholar Berossus
In the Chaldean Legacy book, P.175, the Chaldean Babylonian scholar Berossus, which started his own school to teach the Greeks in the Koine Greek language the deep knowledge of ancient Mesopotamia. This academy included sophisticated sciences and social studies like math, astronomy, medicine, history, and philosophy.
Source: https://www.chaldeanlegacy.com/