The game involves interacting with various objects in the classroom to keep the student awake. Each interaction triggers a unique animation and dialogue, but the student remains drowsy until the school bell rings. The goal is not to keep him awake indefinitely through interactions, but to survive until the bell.
Focus on clicking all available interactive objects to see their effects and keep the student momentarily distracted. There doesn't seem to be a specific sequence of actions required, but rather a need to engage with the environment until the timer (school bell) runs out. Experiment with all items to ensure no interaction is missed.