(CNN) Students at a Wisconsin high school got a huge surprise on their first day of school: An area businessman offered to pay for every graduating senior to attend a two-year technical college.

Luck High School principal Brad Werner announced the offer on Tuesday at the school's welcome back assembly in the school gym. The school's 34 seniors were sitting in the front.

"It was a fun experience for me to share this experience with the seniors and watch their faces and their eyeballs get big," he said.

It was almost as big a shock for Werner.

He said Dennis Frandsen, who owns companies around the region and one of Luck's two banks, called last month and asked to meet with Werner and the school superintendent.

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