I filled out the form on Lindamood Bell's website and talked with them. What they do is an intensive short-term program every day for 1-2 months where the kid goes there instead of their normal school - so it isn't a fully different school. Nonetheless, clearly very expensive and was not what we were looking for.
There are some private tutors who did related things. You could ask around in your area. However, I think it's the intensive and focused nature of the program that is what is supposed to work. Not really sure I understand it, but that's been my experience with them.