Just know, the year your child turns 17, you don't get federal EIC anymore.
I lost it with my oldest a couple years ago. I have one I can claim this year but next, he'll be 17. Drats. Thankfully, I have a wee one who'll qualify for awhile.
I don't know why 17. It's not like the kids are moving out at that ripe old age. Most kids don't graudate until they're 18, unless they made it in before the district's cut-off date. Some don't leave home until well in their 20s.
You can still claim them as dependents, but that fat little EIC bonus goes bye bye at 17.