(CNN)Teachers are often unsung heroes. Parents entrust them every day with their most precious possession. Teachers spend eight-plus hours a day as educators, confidants, disciplinarians and friends to other people's children.
It is a noble profession, but one Florida teacher recently proved she's a hero of extraordinary proportions.
On December 3, eighth-grade math teacher Kristina Buhrman was filling in as a bus driver for Discovery Academy in Lake Alfred Florida, as she often does. By all accounts, that Wednesday felt like any other day -- until right after the last stop when the bus hit the highway for its last leg of the journey to school.
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