This chapter of the Outlast II guide is a complete walkthrough for the stage called The School Roof. Here, you can find hints that will help you complete it. Moreover, recordings and notes that have to be recorded with the camcorder as well as the location of batteries and bandages, which are integral part of the gameplay, are listed in this section.
On the roof, go straight on. You can see a silhouette in the distance. Follow it. Turn left and go towards the light.
Climb up and cross the railing. Next, go straight on. Keep going towards the light. For the moment, there is nothing interesting to be found.
Eventually, you will enter a staircase. Go down. After a while, you will encounter a monster you've seen here before. Run upstairs. Once you see signs on the walls, turn around and run downstairs as fast as possible. Run to the courtyard to continue the quest.
Go right. You will find a hatch right next to the tables. Enter it. Run straight on down the corridor. The monster will appear behind you. Ignore it and keep running to the next hatch. Go up. You're behind the school canteen. Go inside. The door behind you will close. Record the painting on the wall (Roots and branches #20).
After a second, you have to follow a child. Use the microphone to target and follow it. You'll see her for a while and then it'll turn out that you're inside a cave. Exit it to start the next stage.