So, sometimes works in the Fantasy genre are based on popular tropes. I'd go as far as to say that most are. The thing about any trope is that it became a trope because it's entertaining. So yes, Pam Uphoff's Directorate School is, at its heart, based on a trope: It's a boarding school for kids. And yes, J.K. Rowling used it too. Rowling has sold only God knows how many millions of books though and that's because it's a good trope. It works. And Directorate School is a good book. I like the whole "Let's go to school and save the world in my spare time" thing. Who didn't think their problems were world ending as a teenager? Of course, in this book they're probably right, but why nitpick?
The Directorate Series, so I have been told, is a continuation of the Wine of the Gods series, which started with Outcasts and Gods. I have to confess that I have not read as many of the books in the series as I would like to. I'm working on it. I damn sure plan to own them all at some point.
Despite the fact that Directorate School is a follow on to an earlier series, I had no problem whatsoever understanding what was going on. There was less heavy world building than I've seen in other books to be sure, but I liked that. The fact that we missed the lecture on the middle name of the emperor's sister's, cousin's, cat's, dog's, pet goldfish's little brother is a good thing. It kept things moving and the book has multiple sequels, so it's not like she had to squeeze it all in. Don't get me wrong. I enjoyed John Ringo's The Last Centurion and I'm a David Weber fan (and sometimes I'd like to see a Weber of words meaning a huge infodump the same way people refer to a Weber of missiles) so it's not like I don't enjoy some background. I just don't think it always needs to be there and Heinleining in details works.
The upshot of avoiding needless exposition is that we get additional action. Directorate School cooks with grease. There is always something going on. Whether it's schoolyard battles in the dojo or actual combat, something is happening. And there is the usual teenage thing going on in the background. I can't believe how grateful I was that I didn't have to save the world right before that big math test. I mean, I didn't KNOW how grateful I was, but I was totally grateful. Seriously, these kids do great.