Students, parents and staff at Oakville Elementary School got into the Halloween spirit at the school’s Monster Mash and Trunk or Treat despite some pretty nippy temperatures Friday night. Above, OES Principal Chad Dickemper looks a tad concerned as he’s confronted by some scary characters.

The scary clowns are actually former OES students who returned to scare their former principal, David Dominguez and Natalie Dominguez. The two are now in high school and middle school.