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What Works Clearinghouse

In order to register a randomized controlled trial (RCT), researchers must have secure log-in credentials.

Researchers registering Randomized Controlled Trials are required to submit study details, including:

  • Principal investigator
  • Start and anticipated end dates
  • Sample and design details
  • Primary outcomes
  • A signed letter of commitment

RCTs may be registered once the study receives funding and is in progress. We encourage you to print a paper copy of the PDF File RCT Registry form (212 KB) in order to review all the required information before completing the online registration.

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Paperwork Reduction Act Statement

According to the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. Public reporting burden for the collection and registering of Randomized Controlled Trial information is estimated to average 30 minutes per response including time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding the burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to the U.S. Department of Education, 400 Maryland Ave., SW, Washington, DC 20210-4537 or email and reference the OMB Control Number 1850-0788. Note: Please do not return the completed registry form to this address.