So you've designed a great web site for your school but don't have the programming experience to create a form for registration, enquires, or one of the other many tasks that a web form could facilitate. The Web Form Factory web site generates the PHP code -- the most common language with which to build forms on the web -- based on your criteria. This site gets you past this barrier. It's open source, so you can take a look and see how it works.
Just remember that if you build a form using PHP or any other language that interacts with your server that you do need to be aware of any security warnings related to bugs in the language. Fortunately, this site should generate well-written code and thus should be more secure than what you would do as a novice.