Here is a page of information from Safe Routes to School that can get you pointed in the right direction:
It lines out two methods (loose/informal and more formal) and although it's not a step by step guide as to what you need to do to get this going it provides you a framework that you can follow to present to the school to show that safety and organization has been taken into consideration.
Quick steps to a walking school bus or bicycle train
Loose, informal structure
- Invite families who live nearby to walk or bicycle as a group.
- Pick a route and take a test walk or ride.
- Decide how often the group will travel together.
- Start walking or bicycling.
Highly organized, more formal structure
- Determine the amount of interest in a walking school bus or bicycle train. Contact potential participants and partners and identify a coordinator.
- Identify the route(s).
- Identify a sufficient number of adults to supervise walkers or bicyclists. (The Centers for Disease Control recommends one adult per three children for children ages 4 to 6 and one adult for six children for older elementary children ages 7 to 9 (2000). For bicyclists, one adult per three to six children is advisable.)
- Finalize logistical details including setting a time schedule, training volunteers and promoting participation.
- Kick off the activity.
- Track participation.
- Make changes to the activity as needed.
Sincerely,
Sam Haraldson
Bozeman Bike Kitchen, Montana