UNION, Missouri (KSDK) -- At Central Elementary in Union, Missouri, the best teachers may just be two students.
"They are both individually incredible," said first grade teacher Adrienne Koester.
First graders Vincent Butterfield and Zac Gossage are very good friends and often very silly.
"Why does the chicken cross the playground?" Vincent joked. "To get to the other slide!"
But recently there wasn't a lot to laugh about.