Dominic Vitetta stretched his fingers, set the timer and started stacking 12 cups.In 7.21 seconds, he had formed three cup pyramids and broken them down.Cheering, he ran back in line to one of his fifth-grade classmates to compare times.Thursday afternoon, 82 Brookwood Elementary School students spent time after school stacking cups in an attempt to break a Guinness World Record for most people stacking cups in multiple locations in one day.According to the World Sport Stacking Association, the group that heads up the record-breaking attempt, Johns Creek and Shiloh Point elementary schools also participated in the 2010 Stack Up.As of late last week, the results were still being tabulated. The association has held the Stack Up on the official Guinness World Records Day each year since 2006.The fifth-annual global event requires that participants be engaged for at least 30 minutes in sport stacking, an activity in which people race the clock to stack regulation cups into predetermined patterns.At Brookwood, the students moved to different stations to attempt different challenges, such as head-to-head stack-offs, and pairs linking arms and stacking together.Maureen Paluzzi, the school’s physical education teacher, said she enjoys incorporating the unique activity into her classes because students don’t need to be a great athlete to be successful.“It’s a really cool challenge for them and everybody can be a star,” Paluzzi said.This was the second year that Brookwood students had a chance to break the record and get an official Guinness certificate.In 2009, 276,053 stackers topped the record set in the previous year.Joey Hering, a fifth-grader, was one of the stackers last year. This year, he set a new school record for timed stacking of 6.03 seconds.“It’s just fun,” he said.