Grab Infirmary key from Right classroom

go to the very left side door

Grab Parlor key from the cabinets in infirmary

Grab 2 tools out the bag (Crowbar & Screwdriver)

Got to the Parlor room (Last door on the left side of 2F hall)

Go to 3F first classroom on the right (Code 2515)

Go down to 2F and after the cutscene got to the door in the middle of the hallway

Use the screwdriver to look nehind the portrait Code: 1647)

Go back to 3F and grab John Keith's key off the table then grab the security box

Go down to the first floor and go down the Lecture Hallway

Enter the classroom on the right as soon as you walk in

After the cutscene read the sparkling note on the wall (Code:0619)

Go back through the door you entered the hallway in and go back to the 3F

Go into the room in the middle part of the hallway

Go back into the lecture hallway this time you will enter the left door

Read the blue note on the chalkboard and Grab note in the room on the ground

Go back to where you came from but go left to the infirmary in the very back

then go back to the reference room (middle room 2F and go to the 2nd from the right bookshelf and intereact with it (Code: 9981)

go back to the 3F and go to the room on the right end

then head down to the 2F again and go to the first room in the left side of the 2F

go to the trash can (Code: 144246)

after the cutscene go to the 3F left side first room as you walk in

after reading the diary on the desk go down to the basement through the left door

Pick up the iron pipe and move the middle shelf use the Iron Pipe 3 times then use the crowbar on the elevator

after the cutscene go to the lecture hall 2F and go to the furthest room from the steps

DONT FORGET THE ENDING YOU WANT IS THE BOTTOM OPTION NOT THE TOP (Unless Running Good End)

You CAN use the same method from the Hotel Crooked Man fight here however it is more difficult to do