Everyone Needs a Break
Teaching is a tough job. You have to teach continuously and also treat each student with equal attention. It sometimes gets challenging to concentrate in such conditions, so, a break is a must.
Source: buhamster.com
However, you can’t leave the school without a substitute at your place, which is difficult as everyone is busy. Lucky for this guy, it was Halloween, so he had a third option, a cardboard cut-out. This cut-out ensures that the seat stays occupied and hey, it doesn’t talk or complains.