Kristian Chicas, 10, paid 25 cents Monday to guess the number of candy hearts in a jar in the foyer of Bordewich-Bray Elementary School.
The winner gets a catered lunch with Vice Principal Susan Squires, but Kristian was focused on higher goals.
"I just wanted to help the kids who have cancer," he said. "I really feel bad when I see someone who has cancer."
Money raised will go to the Northern Nevada Children's Cancer Foundation.
It is the school's second annual fundraiser benefiting organizations that fight cancer, a tradition that began when Squires was diagnosed with breast cancer.