Participants in the Chicago Study. We want to hear from you. 


Chicago Longitudinal Study on Facebook


Health Exam Invitation Letter



CLS Participants: We are partnering with our colleagues at Northwestern University’s Department of Preventive Medicine for our upcoming health project. You may receive a phone call from them inviting you to schedule an appointment. Dr. Arthur Reynolds, who has directed the CLS since the 1980s, and his team continue to lead the study; however, because they are currently located in Minnesota, Northwestern will help coordinate the in-person appointments for this next phase of the project. If you have any questions or concerns, please feel free to call or email Dr. Reynolds’ team (612-849-7897; 1-866-872-4270; clsstaff@umn.edu). Thank you! 



Celebrating 1065 completed interviews today!



Celebrating 1000 completed interviews today!

Thanks to all who have participated! We hope to talk to those of you who have not completed the survey before we wrap up the interview project in mid December.

1000 complete



We're celebrating 900 completed interviews today! Next stop, 1000. Thanks to all who have participated...we're excited to talk to more of your classmates!



This morning our CLS team celebrated 800 completed surveys!!

We could not enjoy this delicious cake without all of our wonderful participants like YOU. We are truly thankful for your participation and willingness to help us improve schools and the lives of children and families today!

800 cake

800 party


We met with 5 amazing CLS participants last week. So cool to hear their stories and spend time together!

Focus group




606 completed surveys so far! Thanks to all our participants....we look forward to talking to your classmates in the coming months!


Midwest CPC Expansion is a five year project to expand a proven Prek-3rd grade model (Child-Parent Center Program) and evaluate its impacts on children's well-being. The 2012-2013 preschool cohort includes a partnership of four school districts (Chicago, IL, Evanston, IL, Normal Unit 5, IL, and St. Paul Public School, MN) and eight educational organizations. Additional expansion sites (Madison, WI, and Rochester, MN) opened in Fall 2015. The goals of the Midwest CPC Expansion are to improve children's school success and increase parent involvement in education and the community, and to develop a sustainability and scale-up plan.


Learn more about Child-Parent Centers. Visit cpcp3.org.


PreK to 3rd Grade Program Registry


Lorraine Sullivan, CPC program founder, 1917-2013.
Sullivan (1971). Let us not underestimate the children.


Lorraine M. Sullivan Memorial Fund of the Child-Parent Education Centers


CLS in the News


President Obama cited CLS research in 2013 State of the Union and recent remarks in 2015.


About CLS

The Chicago Longitudinal Study is a federally-funded investigation of the effects of an early and extensive childhood intervention in central-city Chicago called the Child-Parent Center (CPC) Program. The study began in 1986 to investigate the effects of government-funded kindergarten programs for 1,539 children in the Chicago Public Schools.

The study is in its 20th year of operation. Besides investigating the short- and long-term effects of early childhood intervention, the study traces the scholastic and social development of participating children and the contributions of family and school practices to children's behavior. The CPC program provides educational and family support services to children from preschool to third grade. It is funded by Title I and has operated in the Chicago Public Schools since 1967 (see the CPC History Document).


Children walking to school.

The Chicago Longitudinal Study has four main objectives:

Boys outside Child-Parent Center.