A New Horizon? The Effect of a National Education Reform on Student Achievement and the Academic Environment

We study the short-run effects of New Horizon, a large-scale national education reform implemented in Israeli elementary schools. The reform combined multiple school-level interventions, including expanded small-group instruction, increased teachers’ on-site working hours, higher salaries, new promotion and professional development requirements, and strengthened school leadership. Using the staggered rollout of the reform, we find that mathematics and English test scores increased by 0.1–0.2 standard deviations within four years, alongside immediate improvements in student–teacher relationships, teachers’ efforts to support students, and classroom behavior. At the same time, teachers reported substantially higher workloads, pointing to short-run adjustment costs that may have contributed to relatively modest achievement gains. Overall, the results suggest that comprehensive, whole-school reforms can improve both academic outcomes and the learning environment, with small-group learning and changes in teachers’ working conditions playing a central role.

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