This one was recommended by the Cakewrecks blog lady. I don’t think it will catch on in middle school, but maybe the wry-witted advanced readers might give it a try. I found it cute, and the little Scottish creatures are adorable, though a student would be hard-pressed to figure out the accent/dialect. I haven’t read book 1 in this series, but it didn’t make a difference. Grades 7 and up.