Leadership requires crafting an agenda, working in a deeply political world and working closely with other people. Schools do not teach this. Business school fails dismally to teach this, and most corporate training swings wildly between technical training (accounting and systems) and tree hugging, raft building and team building on the other side, according to Jo Owen in her book The Leadership Skills Handbook: 50 Essential Skills You Need to Be a Leader.
My full review of the book is available at my business book reviews website.