Stephanie Gamble writes: “When I first started as a school librarian I had a lot of frustrations with the 300s. Arriving in my grade 9–12 library after a history PhD and years at research universities, I chalked up my frustrations with Dewey—especially the way the 300s pulled critical aspects of history out of ‘History’ when it involved minority groups—to a need to break my old Library of Congress Classification habits. But why do we use Dewey? Our mission is to prep our students for college level research, but we aren’t teaching them college library organization.”