FULLERTON (CBSLA.com) — A Fullerton elementary school class pitched in to help one of their own after someone gave their classmate counterfeit money in a Girl Scout cookie sale.

Isabella Conger, a student at Orangethorpe Elementary School, had an unfortunate experience selling the popular baked goods.

“Her and her mom had gone to the bank to turn in her money for Girl Scout cookies and unfortunately, one of the $100 bills was counterfeit. The bank told her they would be responsible for paying for all the money,” said teacher Nancy Karcher.

“My mom started to cry. Whenever we got home, I started to cry,” said Isabella.

When Isabella told other students about her dilemma, 7-year-old Andy Penn came up with a plan for a fundraiser.

“We weren’t surprised at all. For better or worse, our kids are busybodies,” said teacher Betty Chang. “They want to know everyone’s business and they want to help. They are really each other’s brothers and sisters in here.”

Ultimately, the students decided to donate $1 each. When Andy did the math, he upped it to $2 to get closer to $100.

“Doing good things makes a person feel good and it makes you feel good inside, too,” said Andy.

Isabella couldn’t contain her gratitude.

“Thank you so much,” she said.