Hints 

[1st Floor] 

Hint 1: Look around the door carefully; a wooden stick has fallen nearby. 

Hint 2: Check the art room drawers carefully—you might find a tool that can be inserted into a spot.

Hint 3: In the staff room cabinet, there’s a tool that can hurt others.

Hint 4: Remember to wash your hands after using the bathroom. 

Hint 5: The clock screwdriver isn’t only for clocks.

Hint 6: A cheap temporary key is made of iron. 

[2nd Floor] 

Hint 1: Try inserting a tool into the broken handle to make it usable. 

Hint 2: The standout loner can be found on the 1st floor.

Hint 3: A student from 1st Grade, Class 3 left something in their desk drawer before going home.

Hint 4: The lock ring in the science lab is fixed with a screw.

Hint 5: Play doctor using a doll.

Hint 6: Scribbling on desks is a bad thing to do.

[3rd Floor] 

Hint 1: If a door handle is missing, try inserting an object that fits the hole and give it a turn.

Hint 2: Inside the 3rd floor textbook storage, you can find a tool similar to the one used to get in. 

Hint 3: To play the piano well, lots of practice is essential.

Hint 4: Tear the curtains to make various tools.

Hint 5: Slide a string into a gap, hook a lever, and apply force—you can even lift the old wooden floorboards.

Hint 6: What class is on the floor below 2nd Grade, Class 1?

Hint 7: Check the flowerpot carefully in 2nd Grade, Class 2.

[4th Floor]

Hint 8: Even with three keys, you don’t need to try them all.

Hint 9: Solve the problem brought from the 1st floor staff room to reach the final room.