Answer:
Send poorly behaved children to me and let them sit here.
I look at you, you look at me. I raise my right, you raise your left. What am I?
What has feet and legs, and nothing else?
In buckles or lace, I help set the pace. The farther you go, the thinner I grow. What am I?
I can be red blue purple and green. No one can reach me not even the queen.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.