Admin - See

Impact Score
The impact score is the rating which is assigned to an individual application by an SRG, and designates the reviewers' assessment of the likelihood for the project to exert a sustained, powerful influence on the research field(s) involved, in consideration of established review criteria. The impact score is one mechanism by which the SRG makes a recommendation to the funding component concerning the application's scientific and technical merit. Impact scores may be numeric (10 – 90) or alphabetical (ND, for example).

Quoted from the NIH OER Glossary & Acronym List.

See Also: Scoring, Grants and Cooperative Agreements