This page explains how to solve the quest "Sneeze School" in Yo-kai Watch.
Start the Quest
To start the quest, talk to the woman outside the pre-school, which is east of Springdale Elementary.
Expel the nasty Yo-kai!
Use your Yo-kai Lens to find Snotsolong, Coughkoff, and Dulluma hiding around the school. Be sure to go up the stairs or the slide to check the rooftop. Talk to and defeat each of the hidden Yo-kai.
Is the teacher OK now?
Talk to the teacher to complete the quest.
Return to the List of Quests.