on the observation, just a handful of teachers. here's the problem. you can get higher test scores when you teach to the test. in l.a. unified we spend about six weeks that's required to do test prep. teach kids how to take the test and teach to that narrow 15% of the information that the teacher teaches. that's what they do. that's the standardized tests. only 15%. the gains from one year to another vary. the student distribution changes year to year and the bottom line is, this is trying to create an education system based upon a narrow curriculum and dumbed down curriculum. >> neil: why does it. >> can i finish? >> neil: you need a measure, right? >> yes, this is -- the easiest and least accurate in terms