Conversation so far:
When did Thomas Aquinas go to Paris?
In 1245 Thomas was sent to study at the Faculty of the Arts at the University of Paris, where he most likely met Dominican scholar Albertus Magnus
What did Thomas Aquinas study in Paris?
Then in 1252 he returned to Paris to study for the master's degree in theology.
Did Thomas Aquinas study under Magnus?
In 1245 Thomas was sent to study at the Faculty of the Arts at the University of Paris, where he most likely met Dominican scholar Albertus Magnus
What did Thomas Aquinas do instead becoming an abbot?
Thomas followed Albertus Magnus, declining Pope Innocent IV's offer to appoint him abbot of Monte Cassino as a Dominican. Albertus then appointed the reluctant Thomas magister studentium.
Does magister studentium mean Thomas Aquinas was a student?
the student master (the magister studentium) was responsible for the scholarly progress of students
Did Thomas Aquinas get good grades?
But Albertus prophetically exclaimed: You call him the dumb ox, but in his teaching he will one day produce such a bellowing that it will be heard throughout the world.“
What did Thomas Aquinas do after the magister studentium appointment?
Thomas taught in Cologne as an apprentice professor (baccalaureus biblicus), instructing students on the books of the Old Testament
What did Thomas Aquinas write?
Expositio super Isaiam ad litteram (Literal Commentary on Isaiah), Postilla super Ieremiam (Commentary on Jeremiah) and Postilla super Threnos (Commentary on Lamentations).
Did Thomas Aquinas always teach at Cologne?
In 1252 he returned to Paris to study for the master's degree in theology
Did Thomas Aquinas get his master's degree?
In the spring of 1256 Thomas was appointed regent master in theology at Paris

Question: What did he do after this?
Self-contained rewrite: What did Thomas Aquinas do after being appointed regent master in 1256?