Dr. Gadi Rauner of Tel Aviv University in a Hebrew guest blog post discusses what he sees as a quiet yet revolutionary reform in Israel's education system. As part of the 'New Horizon' policy the Ministry is committed to implementing ongoing teacher assessment by school principals. The National Authority for Measurement and Evaluation in Education in cooperation with The Avney Rosha Institute have developed a teacher evaluation instrument for this purpose. After a pilot run, the instrument will soon be implemented by school principals.