OBJECTIVES: A comprehensive Feedlot Management System (FMS) was developed to optimize feedyard processes.  The FMS consists of 43 Standard Operating Procedures. The objective of this study was to correlate consistent implementation of the FMS with better feeding performance based on Average Daily Gain and Dry Matter Conversion. METHODS: To evaluate the correlation of audit scoring consistency to feeding performance, two databases were analyzed: audit scoring over a 16 month interval which measures compliance with the FMS requirements, and 3 years of feedlot closeout data.  Audit scores from 1/2012-4/2013 were evaluated and a Consistency Index (CI) developed based on four criteria.  Audits were converted to the CI, and an LSMeans calculated to rank 11 feedlots. For feedyard performance evaluation, a database of feedlot closeout records from 2011- 2013 was used,  representing 12,235,158 head and 97 feedlots.   An index combining ADG and DmConv was developed utilizing a ratio of the FMS lot value to the average 3 year database value. To further account for variables outside control of management, a regression model was used with inputs from the database (86,772 lots). The model output was the Performance Index for each feedlot. The inputs were statistically significant at p<0.001. R-squared = 0.443.   The corresponding CI and Performance Index for each feedyard were analyzed using the Pearson correlation coefficient. RESULTS: The Feeding Performance Index and CI are highly correlated at 70%.  The range of CI scores was larger in the lower scoring feedlots, indicating more variability. The aggregate LSMeans CI improved 20% over time. CONCLUSIONS: There are many factors that affect feeding performance in commercial beef cattle production, and this variability can result in unstable returns. In the study group of feedlots implementing the FMS,  consistency based on audit scoring was highly correlated to feeding performance. The study supports utilization of a comprehensive FMS, that optimizes processes and incorporates accountability.