Clark Elementary School

So, my question is, why can kids not sit inside during the cold winter season. My kid has anxiety and large groups of people cause them anxiety attacks. The supposed rule I cannot find in the schools student handbook is that Sr. Jr. can sit inside the school and the rest of them have to all bunch together in the school cafeteria or suffer outside in the cold, my kids only friend is younger then them so basically its either, eat lunch entirely alone, suffer out in the cold to hang out with that said friend, or go to the cafeteria and suffer through the stress anxiety that the cafeteria gives to my child. Why can't our school just be fair and accommodate to all children? Why does my kid have to suffer while the rest get to have fun? Where is that supposed rule in the handbook? I think this should be fixed.