The school year may be over for most American students, but parents must remain as vigilant as ever when it comes to protecting their children’s privacy. Look no further than the shocking, invasive conduct of the Polk County, Fla., educational district last week. It’s a surveillance-state sign of the times.

Two days before their Memorial Day weekend break, kids from at least three different public schools — Bethune Academy (K-5), Davenport School of the Arts (K-5, middle and high school), and Daniel Jenkins Academy (6-12) — were subjected to iris scans without their parents’ knowledge or consent. The scans are essentially optical fingerprints, which the school intended to collect to create a database of biometric information for school bus security.