The incident occurred earlier this week at Kaweah High School, a continuation school in Exeter.
According to the Exeter Police Department, officers began looking into the matter after receiving information from the Exeter Unified School District that an adult may have supplied THC vape products to students.
No arrests have been made as of now. Investigators say they are continuing to interview individuals who may have information about the case.
The Exeter Police Department is asking anyone with knowledge of the incident to contact detectives as the investigation continues.