It appears that OCR may have only looked at the front page, often a Special Needs information page, and something else. In one case, the Assistive Technology page. I'm guessing they did the analysis in a very simple way. Used one of the existing Website accessibility checkers.
You can check your favorite educational institution's website. It's easy. I generally use two sites because they report a little differently. Note that with these you can only check URLs that do not require password access.
Go to each of these and enter the URL of the page you want to check.
The school district site I used is my local district, and I've told the district administrators about the problems with the website -- and sent them reports at least 3 times over the past 2 years. Once before the new site was up, and I had hoped they'd use the info I provided to deal with their web contractor. They didn't. Most recently, I contacted the district's Section 504 Coordinator with the information and volunteered to provide some assistance. I didn't get a response.
I see two different ways of proceeding. I could file a complaint with the regional OCR office (not Region X), but that will take time for OCR to investigate the complaint depending on how busy they are. What I plan to do, is make an appearance at an upcoming Board meeting and use my 3 minutes of public comment to raise the issue. I'll probably print out and give them copies of this post. I'll report on this in a future post.