The boy's answer caused Phineas' eyebrows to raise unexpectedly. He was a little surprised Sirius would deign to speak to him that way. Other staff sure, but not him. Interesting. "Now I can see why you are where you are, hopefully you'll learn from it." Unlikely, in his experience with adolescents but this one was more his responsibility.  "Watch the comments in class." He advised a little more sternly.