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 that you paint a visual picture.
Bad example: file photo of dogs
Good visual: three dalmatian puppies sleeping in a pink wicker basket
Graphics / flyers -- Please use these sparingly. When text is laid over a JPEG image, an assistive device or software cannot "read" the words. It's best to use the image as a billboard promo with very few words, and then link the image to the details you've posted under News & Highlights or elsewhere on your site.
Reminder: Informational flyers are great for sending home in backpacks or posting on hallway bulletin boards, but not so much for websites.