Hi Taylor,
I'm assuming because you asked the question that you don't have much experience actually fighting? Even if you do, that may or may not help. Writing fight scenes is not so much about the choreography but (as others have commented) it's about the WRITING of characters, motivations, and believable depiction of emotion.
That said, I also struggled for a long time with writing fight scenes. I've come up with a few ways to get around my mental stumbling blocks.
(1) set the stage for the fight's location in advance. You said it is a school hallway? I expect by now you have described your characters walking here, standing to chat, etc. Before you get into the fight, the reader should have a clear idea of where things are. When the fight begins and your characters shove each other into a doorknob, a fire extinguisher, or a steel locker, it is a familiar object. I hate reading fight scenes where things "appear" just as the character needs it. So, no janitor's cart full of cleaning supplies such as brooms to break in half and make vampire stakes, please!!
(2) choreograph the action from all angles ahead of time. If you don't have buddies to act it out with you? (I have seen this done at conventions and it is very entertaining) Use props like children's toys or sketch stick figures. Your thoughts will be less distracted by the logical mechanics of what-goes-where, who-kicked-what, and you can more easily enter that semi-REM meditative writing state of mind. Your focus should be on the EMOTIONS, the fear, the rage, the intensity.
And... welcome to the Chronicles!