One of our students noticed that his Add a New Post area looked different that our tutorial. For example, he had no excerpt or custom fields on the page and asked why his layout was different. The answer is that as of WordPress 3.1, some screen options on the Post and Page areas are hidden by default and need to be enabled.
This tutorial will show you step-by-step how to enabled them using Screen Options.
Go to a post or page and click on Screen Options near the top right.
Check mark the options that you want to show and then click on Screen Options to save the changes.