Rolling Knolls Elementary students had a chance to cash in on their good behavior from earlier in the year during the school’s annual flea market Friday.

Throughout the year, students earn "rocket dollars" as part of the school’s Positive Behavior Interventions and Support (PBIS) program, Rolling Knolls Parent Teacher Organization President Jennifer Klepper wrote in an email.

And one of the places they can spend the “dollars” is at the flea market, just in time for Christmas.

As Klepper wrote in her email, the event was a success and enjoyed by the students:

"Parents send in all sorts of items—books, toys, games, holiday decorations, home goods, jewelry and accessories—some brand new, but most gently used, and the students then get to go shopping. The students love the jewelry boutique, especially when buying gifts for their moms, sisters and grandmothers. Anything Star Wars is always a big hit, as well.

We had an army of elves (parents and teachers) who helped the kids find items and count out the 'rocket dollars.'"