Very little of the professional development literature identifies its costs. Many say good professional development is expensive, but what is meant by expensive, and if so, expensive relative to what? This article shows that effective professional development is not expensive relative to overall spending and that its key elements and their costs…

This study estimates the costs of providing a high-quality PreK-3rd education approach in all 50 states plus the District of Columbia. Relying on an Evidence-Based approach to school finance adequacy, it identifies the staffing resources needed to offer high-quality integrated PreK-3rd programs and then estimates the costs of those resources. By…