What I Didn't Expect — And the 5 Mistakes I Made Anyway By Lisa Carr, The CompAlchemist | 8-minute read | Career & Leadership I led schools for 19 years. I ran classrooms, managed staff, navigated union negotiations, built culture from scratch, and sat across from parents who were not happy. I thought I'd seen everything. Then I walked into corporate HR. And I made five mistakes so fundamental, so embarrassingly avoidable, that I now think about them every time I sit acro