Recommended IDE for teaching web development to beginners
I find that the best introductory IDE is a lack thereof because, for the most part, the features that an IDE offers (code completion, organization, etc.) are more hurt than help and tend to promote completely unrelated questions, for example, "What is this dropdown under the word I just typed" and other questions about IDE function rather than language functions. Generally IDEs are a distraction to beginners.

I would use a text editor with syntax highlighting such as sublime text, but nothing with too much many extra features. You certainly don't need a full fledged IDE.