Conclusion: Effective professional development should include nine key attributes.
The Institute for the Advancement of Research in Education, AEL
An interpretive review of 14 experimental and quasi-experimental studies identified these nine attributes of effective professional development:
Address student learning needs
Incorporate hands-on technology use
Be job-embedded
Have application to specific curricula
Address knowledge, skills and beliefs
Occur over time
Occur with colleagues
Provide technical assistance and support to teachers