Is scrapping the: SATS in schools across England a good or bad idea?

I think that the SATS are a very narrow way to test kids and that what you end up with is kids being "trained to pass exams" rather than actually learning anything. I've met kids who do well in SATS who would scare you with their lack of knowledge. A friend's daughter supposedly studied WWII last year for history but when asked "who were the nazis" and "who was Hitler" just shrugged and said "dunno!". That kind of thing scares me because she is considered average but her parents are concerned because her writing and maths skills are so bad for her age but the school pretty much deny it. We've also got friends with a very bright son who the school were desperate to make sure was available to do the SATS - him and about three other kids - because they knew without them the average across the year would be bad. Surely this shows how flawed the system is if a few kids can make the school look good in the tables?