Top performing companies have long used intelligence tests in their selection procedures to predict who the best leaders are. However, no longer are the brightest favoured, or guaranteed success. A post-modern world demands a fresh outlook on leadership. How can school leaders judge their effectiveness? How can school leaders lead intelligently? This article explores a theoretical approach to effective school leadership in an emerging context, which embraces a holistic understanding of intelligence. While individual rational (IQ), emotional (EQ) and spiritual (SQ) intelligences are necessary for a leader, their true power lies in maintaining a balance among all three. This is known as leadership intelligence (LQ).