one of the legitimate concerns arenella the the analogy is you might get some great products. the problem is and is not clear they will get the traction. one of the sectors legitimate concerns right now is that you -- the incentives are more aligned to adopt to fight more easily or do reconnaissance better and so forth. it is a clear pathway to adoption than a fragment system of 50,000 district which in many ways operate where superintendents are rewarded because they did something different than a superintended next and then not that they did or did not help students. >> and thinking about the metrics question, it seems to me was learn it is doing is more inclined to -- accountability than liberal arts at a higher level. even there, it strikes me if you are a tutoring a fifth grader in english language arts, you are only probably tutoring them a small portion of what will and up on the state assessment. one question for me is if we are focusing on the kinds of outcomes -- that right now we are said to measure -- how good of a metric to capture the value are adding or do we ne