45 CFR § 2522.560 - What are performance measures and performance measurement?
(a) Performance measures are measurable indicators of a program's performance as it relates to member service activities.
(b) Performance measurement is the process of regularly measuring the services provided by your program and the effect your program has in communities or in the lives of members or community beneficiaries.
(c) The main purpose of performance measurement is to strengthen your AmeriCorps program and foster continuous improvement and to identify best practices and models that merit replication. Performance measurement will also help identify programmatic weaknesses that need attention.