HEADCANON with strong proof based on reading: bit.ly/ThrawnStore1
THRAWN attended PREFSBELT IV. He probably graduated from there rather quickly since he already knew all the information and they stuck him in the library, which was a mistake, because he learned EVERYTHING he could in it.
We have seen behaviors from a certain site that are disturbing and we will not discuss. That is why this blog only shares information directly from the literature, authors, or Lucasfilm personnel. Anyone can use search engine for their needs, but we refuse to use this site for our examinations. Sorry.