Unless calling it "magic" rules them out, Diane Duane's Young Wizard books. Most of them were even published this century. I've just finished a reread on them (and catch-up on new ones I hadn't read before) and I like them a whole lot. They have the Heinlein juvie nature -- kids do important stuff and have to face real issues. The feel is an interesting mix of SF and fantasy; the fantasy bit being the Powers that Be and the First Power hanging there in the background (and the frequent personal interaction with the Lone Power). But everything else is solidly stfnal. Depending on why you specified "sf", these might well fit.
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timeasmymeasure
no subject
Date: 2012-02-22 04:40 pm (UTC)