Nothing to do means boring.  
During classes,  I am sitting in the staff room.  
When I am told to go to Wakaba class, a class for retarded students, I go there.
But the class has always enough teachers to teach and help them.
So it maybe doesn't matter if I am there or not.

I know some staff say that i don't work because I don't want to, something like that negative things about me.   I was sad to hear that and depressed for a while.
I asked a Vice President for a job and I tried looking for something to do.

My solution...
I try the best in my situation and I don't care what others say.