Where’s the attraction in a boy with boy-sized ‘parts’?
The attraction is the psychological domination over the boy.
Be forewarned, the following is harsh reality thought from the ID:
Let's see: cute young white teacher; 13 year old from Rosa Parks school, very likely non-white; very likely "big for his age"; authorities find out during questioning about incident between mother and sister, no mention of a father.
This is straight out of the darkest (no pun intended) fantasies from the 'net, not to mention the past 200 years. I went to school just as desegregation started, and there were times I had some pretty ridiculous fantasies about some of the "new" (non-black) teachers.