For teachers or students looking to learn more about web development, an online sandbox is a great place to play. Accessing a server’s file structure is simple using FTP, and makes a beginner feel like an all-powerful hacker. A few clicks of a button can change a website for the entire world!
If you’d like to provide FTP access for educators and classes to experiment with, consider a remote location that won’t affect the functioning of the public presence. One option might be Dreamhost.com’s free non-profit hosting plan. Super nice people, quick support response time, carbon neutral, and one-click install plans for WordPress, Drupal and other content management systems.