BIO Research Experience for Undergraduates Sites (BIO REU Sites)

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Important Information for Proposers

A revised version of the NSF Proposal & Award Policies & Procedures Guide (PAPPG) (NSF 22-1), is effective for proposals submitted, or due, on or after October 4, 2021. Please be advised that, depending on the specified due date, the guidelines contained in NSF 22-1 may apply to proposals submitted in response to this funding opportunity.

Supports research and mentoring experiences for undergraduate students to broaden participation in the biological sciences.


The Directorate for Biological Sciences (BIO) participates in the NSF-wide REU program. The Division for Biological Infrastructure (DBI) manages the REU Site program for BIO.

The NSF-wide Research Experiences for Undergraduates (REU) solicitation governs the overall competition. The following clarifications/explanations are specifically for REU Site proposals submitted to the BIO/DBI.   

  • A BIO-funded REU Site hosts on average 10 students for a summer program lasting approximately 10 weeks long.
  • In BIO, at least 50% of participants must come from outside the host institution.
  • Stipend, meal allowance and travel to and from the REU site must be budgeted. A small research allowance of $1,000-2,000 per student can be added to Participant Support costs.
  • Travel to conferences to present student research should NOT be included in the budget. Travel funds to students are provided through a Travel Award system administered in the website.
  • Over the past several years, Site awards to institutions have the predominant costs under the Participant Support Costs (PSC); typically, PSC constitute 90% or more of the Total Direct Costs.
  • Most awards provide 3 years of funding. Proposers wanting to request more than 3 years of support should contact the Program Directors.
  • Assessment of BIO-funded REU Sites is done using the Student Assessment of Their Learning Gains Undergraduate Research Student Self-Assessment (SALG URSSA) tool (see the website for details).

Program contacts

Sally E. O'Connor (703) 292-4552 BIO/DBI