Maize ? Officials at a Wichita-area elementary school are concerned that some fifth-graders reportedly tried to sell concoction of Kool-Aid and sugar, calling it “happy crack.”

Karen Duling, principal of Pray Woodman school in Maize, contacted parents after the incident on a school bus came to light. She says it might seem harmless, but she is concerned that it mirrors behavior that has serious consequences.

Duling asked parents to check their children’s backpacks each day to be sure they aren’t bringing anything to school that doesn’t belong. Pray Woodman serves students in second through fifth grades.

Karen McDermott, spokeswoman for the Maize district, told The Wichita Eagle that school officials are investigating. She says the students will be disciplined according to the district’s policies.