The NSRC's Professional Development Center 

More information:

Balanced Leadership 

Learning to Lead. Leading to Learn. Improving School Quality through Principal Professional Development

What have we Learned? Local Systemic Change Initiatives Share Lessons from the Field 

Teacher Professional Development. Does it Make a Difference in Student Learning? 

Revisioning Professional Development 

Principles of Effective Professional Development for Mathematics and Science Education: A Synthesis of Standards 

Looking Inside the Classroom

The Status of Middle School Science Teaching 

The Status of Elementary Science Teaching 

Chapter 7, Expertise : The Wonder of Exemplary performances 

Horizon Research - Professional Development for Mathematics and Science Teachers