Part-Time Help needed

We have a unique, but critical, need! My wife and I have a 9-yr old, Lily, who is in 3rd grade and a 5-year-old that is Kindergarten. Both are enrolled at Nashville Christian School (NCS) less than 1 mi. from our home and takes less than 5 minutes to get there. Both children get dropped off and picked up at the same location at the school.
My wife is legally blind and doesn’t not drive. I travel with my work, typically 1 overnight per week and we need someone with reliable transportation to help take the kids to and from school when I am away and help my wife for a few hours after school. Your time commitment would be less than 4 hours per week, and you would be paid a set amount regardless of the amount of time, even if it is less than that.
My travel days are flexible based on your schedule.