I took part of 401k withdrawal to pay college tuition, how do I show it in turbo tax

I withdrew money from my 401k and part of it was used to pay college tuition for one of my sons.  In order to lower the early withdrawal 10% fee, I would like to enter this amount somewhere.

Also, for some reason, turbo tax shows my younger son, a junior undergraduate, has already taken the four years allowed for the American Opportunity Credit.  I have already deleted his information and re-entered it, but keep showing the same, which is not allowing the $2,500 credit.