In case you need a math refresher, the relationship of a circle's circumference to its diameter is 3.14.

Many schools use it as a day to celebrate math. At Rush Henrietta they are also using it as a fundraiser for the Wilmot Cancer Center.

For every $40 a math class raises, they earn a pie they get to push into their teachers' face on stage during lunch.

As of Tuesday, Rush Henrietta had already raised more than $2,000.