The safe code for the safe in the school Dark Zone in Dying Light: The Beast is 5-40-90. This code is found in binary form on a whiteboard next to the safe in the school area. Entering this combination will unlock the safe at the school location.

Here are some quick details to help:

• The code is written in binary numbers on a whiteboard inside the school.
• Converting the binary gives the combination 5-40-90.
• This safe is part of the Dark Zone in the school and is associated with the Cable Guy mission.
• Opening the safe will give you loot and items useful in the game.

If more safe codes or other locked areas in "Dying Light: The Beast" are needed, I can provide them as well.