Get your taxes done using TurboTax

It seems odd to me that the use of a 529 college savings plan for my children's college expenses would impact the deductible for the classroom expenses (up to $300) educator deduction?  These aren't "education" (meaning tuition, housing, books etc.) deductions.  Also, in the past TurboTax has recognized this separately and allowed the deduction for classroom expenses when using a 529 savings plan separately for children's education expenses.  Can you clarify?  I'm worried that past years were then incorrect?