Ambrose does as he's told.
He reports to his next class.
And after that, he reports to the stables, missing the last two classes of the day, History and Artes (Techniques) as he was specifically instructed. ((I'll leave it to PB/Fiona and jebrick/Clement as to how they'll handle this, we'll play it out here.))
The schedule is listed here and has been for quite some time.