UNION, Mo. -- At an elementary school in Missouri, the best teachers may just be two students.
First graders Vincent Butterfield and Zac Gossage are very good friends and often very silly.
But recently there wasn't a lot to laugh about.
Last June, after feeling ill and tired for weeks, Zac was diagnosed with Acute Lymphoblastic Leukemia, a fast-growing cancer of the white blood cells.
While everybody around him took it hard, Zac took in stride. Despite frequent trips to the hospital, he almost never missed a day of school.
"Because I get to play with Vincent outside at recess, "he said.
Vincent then found out that Zac might lose his hair because of the chemotherapy treatments.
So one day, he showed up to his first grade class with a shaved head.
"I cut it off, "Vincent said. "To make Zac feel like he's not the only one without any hair."
Vincent also learned that Zac's treatments were expensive.
"We had been making these scarves and he just kind of said it would be cool if we could make a whole bunch of these and sell them, "Vincent's mom Karen Butterfield said.
He sold more than 20, earning a couple of hundred dollars.
And he gave all the money to Zac.
Zac continues to get treatments and continues to come to school every day.
And Vincent, well he may be young, but he's teaching us the oldest lessons.
"What is friendship? Vincent was asked. He thought for a moment and said, "A beautiful thing."
Clearly wisdom doesn't always come with age.