I'm not an educator, only an individual with no children who is interested in education. I do some volunteer work for education non-profits, so not sure how much help I'd be about budget stuff. Was really just curious when I asked that question.
With that said, most of my knowledge is about Mississippi. We have tons of problems with our public education system. Budget constraints are always a big issue for teachers, and one that might make it difficult to adopt a new program. At a very high level: https://mississippitoday.org/2018/04/16/analysis-shows-state...
If you're trying to make an impact in Mississippi, the Barksdale Reading Institute works in this space: https://msreads.org/.