Before School or After School Work

Looking for an afternoon nanny / babysitter for the upcoming school year for a 7-year-old and two 11-year-olds. My ideal match would be available at their school at 2:50 p.m. and able to stay until 5:30 or 6:00 p.m. at my home with the kids. After school duties include homework help (when needed) and potentially assisting with dinner prep if able. A reliable car is needed since this would involve getting the children from school.