In seeking to maximize student learning, educators must implement grading practices that assess well-defined course standards and clearly articulate student proficiency. Standards-based grading (SBG) practices enhance student learning by linking well-defined course standards and effective feedback. Analysis of variance (ANOVA) testing sought to determine if the use of standards-based grading in Algebra I resulted in higher achievement on standardized tests, specifically the Algebra I the State of Texas Assessment of Academic Readiness (STAAR) End of Course (EOC) assessment. Specifically, addressing the following research questions: Are there differences on Algebra I scores on the STAAR EOC scores between students in a traditional grading system, hybrid grading system, and a standards-based grading system? Are the effects of grading system methods moderated by participant characteristics, i.e., gender, race/ethnicity (Black, Hispanic, White, and Asian), English language learner, special education services, or economically disadvantaged? One high school campus in a large school district in North Texas was involved in the current study. The study examines three years of data as the campus transitioned from a traditional grading system to one that employs the tenants of an SBG system while continuing to formally report percentage grades for assessments. In this study, the researcher found evidence to …