SAN DIEGO -- 10News has taken its big "Come Clean" campaign into the schools, asking children how we can all clean up our act.

Like Publishers Clearinghouse, the 10News prize patrol descended on schools throughout the county, honoring the winners of the "Come Clean San Diego" contests.

The poster winner is Mrs. Blair's first-grade class at the Literacy First Charter School in El Cajon.

To look at the winning artwork, click here.

10News took the middle and high school essay winners by surprise.

Seventh-grader Jodi Helsel, at Carmel Valley Middle School, had a formula.

"Keeping our beaches clean, recycling and painting over graffiti," said Helsel.

To read Helsel's essay, click here.

High school essay winner Tyler Tuikolovatu, from Otay Ranch, said trash is piling up.

"Some of the beaches are bad. You can't swim in the water, and most people won't even walk on those beaches," said Tuikolovatu.

To read Tuikolovatu's essay, click here.

10News was a surprise guest on the morning announcement broadcast at Olive Pierce Middle School in Ramona to honor a winning pair.

Yanik Thomas and Shelby Nuth produced a winning public service announcement.

"We're 90 percent perfect -- just take an extra 10 percent by cleaning up," said Thomas.

The other winning video production team was at Kearny High School in San Diego. The students who put the video together were Quynh Nguyen, Neal Jeffries, Michael Duong and Khoa Do.

"If you clean up, this will be a better place for everyone else," said Do.

High school winners received $500 scholarships from Glenco-McGraw Hill and Sempra Energy, middle school winners received pizza parties and first-graders received an ice cream social for their class.

Thanks to the San Diego Padres, all of the winners will be honored on the field at Petco Park May 23 before the game.