Kehoe said it appears Poytress was switching the Adderall with Benadryl and naproxen, which is the active ingredient in Aleve, a pain reliever. The replacement medications did not induce anything “harmful to the child,” he said.

“I don’t think there were any kind of major health concerns,” he said. “I think there was something where a parent noticed behavior a little different.”

Kehoe said the quantity of Adderall taken was minimal, perhaps several tablets per student. “I would say a few tablets. ... At this point I don’t think it was anything significant. It’s not the kind of thing where they put in a new prescription for the next month and, lo and behold, it’s all gone.”

Shawn Smith, a county schools spokesman, said in a statement: “The safety and security of our students and staff is a top priority. These are very serious charges and the clinic aide will not be returning to our schools. The school division is working with Chesterfield Police on their investigation, and we continue to be in direct contact with the families of students who are involved.”