Young readers will not only gain an understanding of the historical period, but relate to Cindy's standard tween issues of school, friends, and boys. Fitting in is a huge concern at this age, and Cindy's difficulties are still ones with which young people struggle.
This was definitely a white, middle class story, but also a great feminist one. Like Holms' Sunny books, this one made me ridiculously happy, since it covers a period of time during my own childhood. Will probably purchase at least two copies. I do sort of wish the cover were avocado green, though. Or maybe purple. Or orange. Better if it were a plaid of all three-- that would have captured the colors of the time! I was a little surprised that girls wore jeans to school; we weren't allowed until 1976.
Since the one hundredth anniversary of women's right to vote is coming up, start collecting books on that topic, and start with the fantastic Cub.