The authors evaluated the effects of P-SELL, a science curricular and professional development intervention for fifth-grade students with a focus on English language learners (ELLs). Using a randomized controlled trial design with 33 treatment and 33 control schools across three school districts in one state, we found significant and meaningfully…

In late 2006, the New Zealand Government embarked on a series of initiatives to explore how the resources and expertise of eight, small, state-owned science research institutes could be combined efficiently to support science teaching in schools. Programmes were developed to enable students and teachers to access and become involved in local…