authority over modifying my child support

by Elise
(Charlotte, NC)

When my ex and I divorced, we lived in Maryland. He moved to NC a few years ago. I moved to NC about 10 months ago.

We have not modified the original child support order in over 10 years. He has paid for both our children for the past 10 years continuing to assist our oldest child (whom is now 21 and a full time college student).

Now that he has remarried, he wants to modify the child support order to stop supporting our oldest and reduce the amount of support I receive for youngest. Our youngest turns 18 in a few months.

I think NC law says the parents have to continue to support the kids if they are in college up to 21 or 24 years old. Maryland law says child support stops at age 18. So as you can see, i would rather go to court in NC.

Question:
Which state has jurisdiction over our case?

Do I get an attorney in NC and go to court here or do we have to go back to Maryland?

Has he set a precedence?

Can the court make him pay our daughters last 2 years of college?

Can the court make him pay for our son's college education as well?