can college student file indepently to claim education credit

We couldn't claim any education credit if we include our son as our dependent.  He is a sophomore in College. My son makes some money but less than 50% of his tuition. We paid his tuition. Can he file independently to claim the education credit? If answered his earned income is less than 50% of his expense, do the parents have to provide their income in his tax return? Will that affect him getting education credit?