Modern measurement was a difficult course that helped me expand my knowledge of statistics. Specifically, this course has equipped me with the skills necessary to accurately measure achievement. In addition to the more philosophical questions such as “what is learning?” this course has also taught me to approach questions of test fairness and accuracy. Some of the analyses that I learned included differential item functioning (DIF), Rasch analysis, item response theory, cognitive diagnosis, and generalizability theory. In addition, I learned how to use statistical software such as Excaliber and Rascal. I feel that the most interesting and relevant analyses that I learned was differential item functioning. This procedure assesses how “fair” each individual question is and if the item is performing similarly for different groups of people. In terms of NCLB and the focus on standardized testing procedure, this analyses is critical to assessing group differences and to ensure that each student receives a fair chance at meeting academic standards.