Keep your website content up to date by reviewing it on a regular basis.
Content goes out of date. Some kinds of content (your news section) may need to be updated weekly. Other content (course schedules) may need to be updated daily at the beginning of the semester, less frequently thereafter. Some content may need to be updated every year.
If you are maintaining a department website, make sure you review your content on a regular schedule to make sure it is still correct and relevant. Here’s a partial schedule to get you started: