1099-Q / 1098-T

I am parent claiming son in college.

He received a 1099-Q in his name & SS #.  

I am claiming his 1098-T for the college credit.

I entered his 1099-Q on his tax return and it shows some is taxable when all went to college expenses.  

Is this correct?

Is there a place I can enter some of the college expenses for him so none of the 1099-Q is taxable?  

Thank you!