Deductions & credits

Thank you for that, but honestly I am still confused. These are the two issues I am confused over... 1-Not be claimed as a qualifying child on anyone else's tax return 2-Be at least age 18 at the end of the tax year (usually Dec. 31) The minimum age to claim the EIC is generally age 19; however, if you are a qualified former foster youth or a qualified homeless youth, you need to be at least age 18. If you are a specified student (other than a qualified former foster youth or a qualified homeless youth), you need to be at least age 24. Since my parents claimed me only for the purpose of being considered for EIC (not as a dependent), but was denied EIC, does that mean technically I was NOT claimed as a qualifying child on someone else's tax return? Also, if I am a student, do I need to be at least 24 to claim EIC? What exactly does "specified student" mean? Why would the IRS send the letter if I don't fill that requirement? I'm sorry for all my confusion, but I really appreciate the help.