We do kids raku at our studio and there are rules. The kiln is stationary with a top hat so easy to pull stuff than reaching in. Its connected to natural gas and we keep a lock on the lever so no one can accidentally turn on the gas.
All the kids have to stand behind a certain line and there is an extra person who stands next to them while the instructor pulls pots. The job of the extra person is to lead the kids back into the building if it gets too smokey.
The kids help prepare the cans with paper. I always make sure the cans are covered and no loose paper can blow around during the firing process. keep extra paper in a covered can.
I wear a welder's jacket along with my gloves and heavy shoes. The welders jacket is fire retardant, not 100% fire proof but better than some old sweat shirt. I sometimes use a heat mask though it doesn't fit well.
Make sure no paper is hanging out the top of cans. Always close up kiln as soon as pulling is complete. Let stuff cool in the can longer than you might otherwise. Have a selection of just a few reliable glazes.
I use a little self standing cone 06 to judge when its done rather than looking at the surface of pieces. It works pretty well if thats your glaze temp. Also sometimes use a pyrometer just so kids can see the temperature.
In our adult raku we require someone be a "spotter" for the time someone is pulling - even if experienced. The spotter just watches the pull to make sure the puller does not fall or encounter difficulty. There is a hose available nearby.
All this has worked so far. The kids stuff gets glazed the week before so its really dried out before being fired.