LOUISVILLE, Ky. (WDRB) -- Students launched boats made of cardboard and duct tape on Friday -- and even the Jefferson County Public Schools superintendent decided take a ride on one.

It was all part of the 21st annual Cardboard Boat Regatta, hosted at Jeffersontown High School.

It's the culmination of a class in which students create models using computers, and then use the blueprints to put the boats together. The class ends with the crafts put to the test in a swimming pool.

Some of the boats sailed right through the water, while others had a rougher ride.

"They can sit at the computer all day, but when they're actually out here and they know they have to get in it and roll it across the water, you can see in their eyes it really sets in: 'I better make this work!'" said teacher Jason Stepp.

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