Open Source goes to High School

Technology rules at Open High where their approach to learning embraces the idea that teaching shouldn’t be as static as the textbooks on which it’s based. Shattering traditional methods, the Open High School of Utah curriculum is built from open educational resources. These resources are the foundation for their content and are aligned with Utah state standards to ensure the highest quality educational experience. The teachers enhance with screencasts, interactive components, and engaging activities to create high quality curricula for their students. Visit www.openhighschool.org for more info!

HELP with WordPress Plugins?

Basically I just need a plugin that will allows my signed up users to add a "featured image" on the posts they write. Because right now it says "access is denied, you dont have permission to". Is there a plugin that will allow them to?

Thanks