Here are some main points to remember:

Raw coding -- Don't leave raw coding on the page like this https://www.fcps.net/Page/125 or this, jane.doe@fayette.kyschools.us, because it is awkward for assistive devices and screen-reading software.  

Informational flyers -- Avoid informational flyers, especially when the text is laid over a JPG image. Simply type the details as an announcement and use the accompanying photo or graphics separately. Example: info flyer 

• Tip: Such flyers are great for sending home in backpacks or posting on bulletin boards, but not for websites.

Hyperlinks -- In hyperlinks, skip generic verbiage like "Click here." Simply embed the link in the text with words specific to the content. 

• Good example: Visit the Fayette County Preschool Program page for instructions on how to apply.

Also, hyperlinks should be unique on a particular webpage. That is, don't repeat any links unless they point to the same destination.

• Example of bad usage: Click this Google form for information about Ms. Smith's class. To follow up with her about the field trip, click this Google form.

Alt text -- Be specific when describing a photo so you paint a visual picture.

• Bad example: photo of puppies
• Good visual: three dalmatian puppies sleeping in a wicker basket