Some schools call it "Specials" - where they go to computers, music, etc. for 45 minutes. Ours go to a different one each day.
I've had a runner in 3rd grade. Yes, he did it to get out of doing the work. He was strong & a couple of times he yanked his hand out of mine & took off. He would also take off from the classroom. The parents response was to spank him. The VP's response was to suspend him. The consequences didn't work: he got what he wanted, to go home & not do his work at the time he was to do it. This child was diagnosed as ADHD, couldn't focus & received no support of any type for his ADHD other then the spanking. He was new to our school & at his previous school had a full time aid, but no IEP or 504.