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Resource | Research and Data | Assessing/Improving Operations Third National Survey of WIC Participants

The National Survey of WIC Participants (NSWP) study series is designed to describe state and local agency characteristics, examine participants’ characteristics, assess participants’ experiences with WIC, and estimate improper payments resulting from certification errors in WIC. The study is conducted approximately every 10 years, and the current study is the third iteration (NSWP-III) in the series. 

12/14/2021
Resource | Research and Data | Assessing/Improving Operations Third Access, Participation, Eligibility, And Certification Study (APEC-III), SY 2017-18

This is the third study in the Access, Participation, Eligibility, and Certification study series, conducted in school year 2017-18. FNS relies upon the APEC series to provide reliable, national estimates improper payments made to school districts operating the NSLP and SBP. APEC studies also help identify sources of error and inform FNS policy and technical assistance for state agencies and school food authorities to reduce error. FNS conducted previous iterations of the study in school years 2005-06 and 2012-13.

09/03/2021
Resource | Research and Data | Payment Accuracy and Program Integrity The Extent of Trafficking in SNAP: 2015-2017

This study is the eighth in a series of studies that examine the rate of benefit trafficking SNAP, annualized amount of benefits trafficked, and store violation rate. The estimates are presented as ‘current estimates’ that are calculated to be comparable to past studies, and as ‘updated estimates’ that are calculated to be comparable to other trafficking reports released by FNS. 

09/03/2021
Resource | Research and Data | Assessing/Improving Operations Study of Nonresponse to the School Meals Application Verification Process

FNS conducted the Study of Nonresponse to the School Meals Application Verification Process to examine (1) the accuracy of the current verification process, (2) district practices when verifying applications for cause, and (3) the ultimate results of the verification process, including the reasons why households do not respond to verification requests and how many households reapply. 

07/20/2021
Resource | Research and Data | Assessing/Improving Operations Direct Certification in the National School Lunch Program State Implementation Progress Report to Congress SY 2017-2018 and SY 2018-2019

This report presents information on direct certification with the Supplemental Nutrition Assistance Program for free school meals for SY 2017-2018 and SY 2018-2019.

06/22/2021
Resource | Research and Data | Payment Accuracy and Program Integrity The Extent of Trafficking in the SNAP: 2012–2014

Trafficking of Supplemental Nutrition Assistance Program benefits occurs when SNAP recipients sell their benefits for cash to food retailers, often at a discount. Although trafficking does not increase costs to the federal government, it is a diversion of program benefits from their intended purpose of helping low-income families access a nutritious diet. This report, the latest in a series of periodic analyses, provides estimates of the extent of trafficking during the period 2012 through 2014.

09/22/2017
Resource | Research and Data | Assessing/Improving Operations CACFP Assessment of Sponsor Tiering Determinations - 2015

This report provides the 2015 national estimate of incorrect payments for the meal reimbursements. The assessment calculates both overpayments and underpayments for FDCHs that earn either Tier 1 (higher) or Tier II (lower) reimbursements depending on the location and circumstances of the child care provider or the participating children.

06/08/2017
Resource | Research and Data | Assessing/Improving Operations WIC Vendor Peer Group Study

The purpose of this study is to evaluate the effectiveness of state agencies current peer group systems, and to provide guidance to state agencies on how to evaluate and update their systems. Specifically, it uses empirical analysis to identify one or more effective models for establishing vendor peer groups that could apply to most state agencies.

05/31/2017
Resource | Research and Data | Assessing/Improving Operations Second Access, Participation, Eligibility, and Certification Study (APEC II): Estimating and Validating Statistical Models for Updating Estimates of Improper Payments in NSLP and SBP

Statistical models were designed to estimate national improper payments due to certification error on an annual basis using district-level data. This enables FNS to update its estimates of national improper payment rates for the NSLP and SBP in future years without having to conduct full rounds of primary data collection.

11/29/2016
Resource | Research and Data | Assessing/Improving Operations Approaches to Measuring Erroneous Payments in the National School Lunch Program and School Breakfast Program At The State Level

The second Access, Participation, Eligibility and Certification Study (APEC II) included a follow-on report that provided statistically-derived state-level estimates of school meals erroneous payments. However, while APEC II provided a rough indicator of relative risk for groups of states (e.g., higher than average, about average, lower than average), it was not a state-representative direct measure, and creating actual annual measures of such erroneous payments at the state level using APEC methodology is cost-prohibitive. This report explores alternative approaches to developing measurement-based state-specific estimates that are responsive to year-to-year changes in the actual underlying rate in each state. It also provides cost and burden estimates for the implementation of each of these methods.

08/29/2016
Page updated: September 16, 2025