In this webinar, the What Works Clearinghouse (WWC) will identify the most commons reasons studies do not meet WWC group design standards and explain how researchers can avoid these pitfalls. We will share tips for designing randomized controlled trials and quasi-experimental design studies to meet WWC standards. The webinar will focus on these two types of studies because these are the most common studies the WWC reviews. Participants can ask the presenters questions during a Q&A; session.