Good job on completing the map, I just kind of got bored of making it after a certain point and stopped, so I really appreciate it. Sadly, though, I actually had certain rooms color coded to say which rooms contained which kind of notebooks, like the blue were the rooms that could have Math notebooks, the light green could contain Language notebooks, the straight green ALWAYS contained Language Notebooks, and the pink contained both. Instead of coloring which rooms were locked, I would just change the color of the door to represent their properties. The orange rooms in the top half were the rooms used by the head teacher, the dark green was supposed to be a landmark for the outside, and some more things were corresponded with other colors.
Also, the second half of the map is scaled larger in width and height (more on width, though), as the endless hallway goes on for about 2-3 times the size of the second half, the two areas would run into each other if they were that size. The reason I didn't put the full length of the endless hallway is because it would make the image unnecessarily large, then taking up a lot more space on the page than needed.
Those details are more of a nitpick, though, as if you were using he map to get around it wouldn't matter as much. The colors are the main problem with the second half. Good job!