Gated

I see a lot of black chairs
sitting on a lot  of tiles
a bunch of squares on the floor
there's a lot of doors
where am I, can you visualize
my whereabouts can you figure
this ridiculous riddle out
so I can find my way out
I am homeward bound
children are gathered around
I am held up but, not bound
only a trained eye, can spot a spy
I'm too busy swatting flies
there's a lot of spills but, none 
are mines, I heard a bottle of water drop
sounded like a gun pop
hoping I'm on lock, so no one
steals my socks, the window
just broke, who's throwing rocks
I never was afraid to fly
the problem was, falling from the sky