Note: The DearEsq free 'ask a lawyer' site is offered as a free informational service to the public and is not intended as legal advice. Laws vary from state-to-state, and in addition every situation is unique, and relevant facts may not be known. The answer to the question posed below may not apply to in your state or to your situation. For legal advice in your state and your situation you should consult with an attorney in your state who is familiar with the rules and laws in your state.
‘My older son is 3 years older than his brother. Once my older son graduates high school will I be able to go back to court in Georgia and have my child support reduced as it would be based on one child instead of two, since my oldest would be graduated and over eighteen?’
Question: Since your son would be reaching the age of majority in Georgia, you can petition the court for modification of both the child support and custody orders, including requesting that the support obligation for your eldest son be terminated.