Get into the Academy


The simplest way is to get in before the the fighting is over.  Open the outer door and run through, keeping to the right and avoiding the battle. Turn right in the 2nd courtyard and head for the torchlit wooden door. Open it, hoping that the patrolling guard is elswhere, and hide in the shadow behind the boxes to get your breath back.

Another method is to shoot a rope arrow into one of the wooden bars above the outer door and climb up onto the balcony.

Alternatively, you can wait until things quieten down and creep in.  This is difficult because the AI are keenly aware.