K - 2nd are the years where you see the most dramatic shifts in both absolute and relative reading levels. As a result, these years may also be the ones where teachers/administrators are most resistant to claims/demands regarding your children. I don't have any brilliant suggestions but the two things that have worked fine for my kids have been unlimited access to higher level books (3rd - 5th) in the classroom and open-ended writing assignments related to beginning literary analysis questions. Personally, I wouldn't worry too much about raising reading levels and focus on raising writing levels as ultimately that will likely be the gatekeeper to access to higher level work.
