School Ratings Trend / School Ratings by Year

[Paul C.]

So I know how to go to greatschools or other websites to see the current ratings for schools, however, for me it is more beneficial to see if these schools are improving or declining(I care a lot less about current rating) as I believe this will help determine if an area will appreciate/depreciate to a certain extent. Does anyone know if there is data out there that has school ratings by year?