Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Sets Math Education Back a Century

I have looked at many, many math series, and taught using several, and I have never seen anything worse than Saxon Math. Its sole focus on mixed review, whether or not basic concepts have been mastered, is incredibly frustrating for children--and teachers. The mixed review aspect also means that it can't be modified for the gifted or for other special needs students as well as other series can. I strongly urge people to take a look at SRA or Houghton Mifflin or, really, any other series. Unless your needs are very very specialized, this series is not for you.