Global Top Gurus names John Hattie (Uni Melbourne) and Pasi Sahlberg (UNSW) in their list of top 30 educators. But how are they selected? you ask. By surveying business people, consultants, academics and MBA’s, the Guru wranglers reply. Hardly an objective measure, you add. True, but it’s like the QS rankings and every university that does well enthusiastically promotes them.