Matthews planning staff says the lights in Warner Park ball fields are now in compliance with the town ordinance.
Residents of the adjoining Sardis Forest neighborhood complained last winter when trees were cleared and the lights on the fields shone on their property.
In March, town staff visited several yards and determined there was a problem. A notice of violation was sent to the school.
The school has since installed light shields and adjusted the angle of the lights near Sardis Forest.