Is OTHER wrong in the post ? POST : Here's a little backstory. I work for a Jewish temple which also as a preschool ( and grade school a few days out of the week). On Saturdays, they have a program which means any and all toys for the preschool are locked up in a separate room. This Saturday however, we had a catered event so we didn't need to worry about the Kuddish (Saturday Jewish lunch) so my co-worker and I decided to rest the room for the preschool. 

The kids would knock on the door trying to get in and "look for something they forgot". I would let the kids enter room one at a time so they won't waste time or find a hiding spot from their friends and for the time it worked. One group of kids respected the rule and entered one at a time and "looked" (they really just wasted my time) but the other group was a different story. 

Before I go further let me explain why kids can't play in the playroom. About a year ago, the main Rabbi saw the kids throw plastic balls, toilet paper and chair. Yes, chairs; metal folding chairs. Ever since that day, we keep all the doors leading to the playroom locked and kids are not allowed to be down there after the program is over.

A brother and sister came down and asked if they could find something. I let the brother come in and told the sister to stay out but she slipped passed me and started playing on the tricycle. I ask her to leave but she didn't. I asked asked a bit firmer but she didn't. So now, I'm mildly aggravated so I took a deep breath and ask again which caused her to snap  back with this line "You can't do anything to me," in a matter-of-fact tone.  

The brother was running out the room while a parent (not the girl's parent but he had a father look to him) walked in to help me get her out. I had no patiences left for this girl so I took another deep breath and yelled "GET OUT OF HERE NOW!"  The girl got up and left in a huff while the parent, slightly stunned, said "You didn't have to yell" 

TL;DR: Bratty kid didn't want to leave a room she shouldn't be in forcing me to yell at her. AITA