As already stated---you cannot get any sort of education credit or deduction unless you are claiming her as your dependent. Only the parent who claims her as a dependent can do that. As far as "taking turns" claiming her---the custodial parent is the one who has the right to claim her. If she has been living with her mom, then her mom is/has been the custodial parent. Since she is too old for the child tax credit, the CTC does not come into play now, even if you had a signed agreement with your ex-spouse.
Sorry--- there are not any deductions/credits despite the money you are spending to help your daughter attend college since you are not able to claim her as a dependent.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
