Instruct: Classify the given Amazon review as either positive or negative.
Query: Old school & out of date

I thought this would be a good addition to my son's classroom library (grade 2) but it is very old & has references to "guerrilla warfare" and "the arms race" --- the homophones used in this book are over the head's of this generation's readers. I love vintage children's books, but this just leaves a kid scratching his head.