Over a dozen students from Walter Reed Middle School in Los Angeles were treated for an unknown drug on Thursday.
Authorities say up to 14 students at the Studio City middle school were overcome by some type of substance.
The students were medically evaluated after the local fire department raced to the scene at around 11 a.m. local time Thursday.
All of the students who came in contact with the unknown substance are expected to fully recover.
This is a developing story and will be updated as more information becomes available.