Almost 300 students are coming together in Henderson this week and starting work on several projects in the city.
The teens are part of the organization World Changers, a student ministry. They come from 8 different states and will be helping several families in need through out the week.
"It's my favorite part of every summer," says Kayla Waddle, who has been volunteering since she was 13 years old.
Re-roofing a house may not be how most teens chose to spend the summer, but 19-year-old Kayla from Alabama loves it so much she's done it for seven summers straight.
"I actually did re-roofing my first year. It was rough. It wasn't as steep as this one, but it was rough," says Kayla.
The idea behind World Changers is to get middle and high school age students involved in helping families in need around the country.
Cara Lee, a communications specialist for the organization says, "There are 26 different sites in Henderson, students are doing everything from painting to building wheel chair ramps, building decks and more."
Even though these kids don't have prior training in any of these projects, they learn fast.
This group will finish re-roofing this house by Saturday.
"It takes a lot of strength. A lot of endurance," says Kayla.
In the end, it's all worth it.
"These kids are helping to meet a basic need of these people," says Cara.
"They're very thankful, that's one of the biggest blessings, is to see the thanks," says Kayla.
World Changers has been around for 22 years.
This year 18,000 students will be doing similar projects in more than 85 different cities around the country.