MARSHALL, Minn. (KARE)- A parent's worst nightmare came true Tuesday when Jacqueline Whylly's 4 year-old son was left behind on a field trip.

"It's the worst nightmare I could have ever been in," says Whylly.

The incident happened on a trip to the Children's Museum of South Dakota. Making matters worse, the school district didn't realize AJ was missing until they got home to Marshall, Minnesota, more than an hour away.

"All I'm thinking is no one is accountable for our son right now," said Whylly. "Anyone could have took him. No one was accountable for him. He was neglected and alone."

When our sister station KARE 11 contacted Marshall Public Schools, the superintendent called back to explain what happened and offer an apology.

"It happened as a result of processes and protocols not being followed," says superintendent Klint Willert. "The process of counting students before they get on the bus and taking a subsequent head count when the students are on the bus wasn't followed."

That second count on the bus never happened.

"Certainly this is not the way schools operate and certainly not the way we want to do business," says Willert. "On behalf of the district I offer our deepest apologies."

A meeting with district administrators has been scheduled for Thursday morning to re-iterate field trip protocols.

Disciplinary action against the teacher, according to Willert, is underway.

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