I loved these essays when I was 12, and I loved them all over again 20 years later. Part of it is that I've never read something of this author that I did not love. Part of it is that I happen to agree with much of what she present here.
Mostly, is how she writes this: The subtitle is "Sexism in children books"
She proceeds to write about her primary school experience, interspersing it with textbook and the accompanying "pseudo-literature" (that's what she calls it) quotations and bibliography. She never says "this was sexist", "this was racist", "this was unfair". But boy, does it come across. At points it's so ridiculous, you can't help but laugh.
She talks about the roles of women in fairy and traditional tales. She talks about explicitly (and sometimes either horrifyingly or hilariously, or both, missing the point) tacking on moralizing end-lines to fables. There are also among the pages pictures of old advertising posters geared toward women. OMG, those posters.
The last essay is one that is dear and near to my heart (and my mom, as a die-hard librarian): this pervasive idea (that needs to be killed with fire) that children literature is "a women thing", because it is more about children (clearly, a province of the female) than about literature, and on this triple insult of "women write badly" "children do not understand much" "bad literature produced by women is therefore a perfect match".
It is a very short book. It can be read in an hour. But is a powerful one, that charms you as you read, that stays in your mind, that makes you squint your eyes at what you read after (and oh, boy, did I tear though some fairy tales collections afterwards).