Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book is not good for children...

Speaking as an English teacher who fights bad grammar habits daily, I say this book is not fit for small children. It is only fit for older children who have a firm hold on grammar and will not be affected by "She don't" and "I thinked" sort of phrases. Truly, the grammar errors in these books nauseate me because they imply that children are simply stupid and incapable of good grammar.