Instruct: Classify Amazon reviews into positive or negative sentiment
Query: sham products - crap for profit by misleading public

These Standard Deviant products are shams. The producers hire a bunch of theater students who know nothing about the subjects taught (I unwittingly purchased SD Physics and Spanish at the same time). These actors read scripts with the most innane material, try to be funny and cute (but they are bad actors to begin with and not funny). I suspect they are hired based on whether they are attractive, and I wonder if they are even paid for their efforts. Anyway, SD products do not teach well or entertain. The material is taken directly from textbooks and read verbatim by "aspiring actors" with grossly inadequate explanation. One of the worst products I've ever happened upon.