This blog doesn't get a lot of traffic, so I pay attention to those posts that do. Most of the all-time favorites are ones that have been featured in other, higher-traffic blogs, like one on Walmart and the DHS that made it onto some kind of right-wing e-mail list and one on collective bargaining that was featured on Mish's site.
review of Ill Fares the Land by Tony Judt. The book is a defense of socialism and was recommended to me by a leftist college (biology) professor. He read it for his professors' book club. No doubt it's assigned reading in many classes around the country. I knew shortly after I published it that it was probably being used by students researching for those assignments. The fact that my, not especially eloquent, review is now reaching the top of my favorites list suggests one small way to reach high school students: writing reviews of leftist books, books likely to be assigned in classes. I doubt the students are finding much criticism of the books from the right, so one could be quite effective in providing arguments and convincing younger readers. Heck, you could have a whole blog devoted to it. Would be a breath of fresh air for the more rational students suffocating in the mustard gas of left-wing propaganda.