The problem addressed in this study was the lack of quantitative evidence regarding the effectiveness of standards-based grading. The purpose of this study was to compare college students' GPAs and their perception of college preparedness to determine if there was a significant difference between students graduating from traditional grading high schools and those graduating from high schools using standards-based grading. An online survey was used to collect the data from college students in their first and second year of college. This study used an independent t-test to compare the data and the results of the survey were analyzed using SPSS software. The results of the study showed there was no significant difference in GPAs or students' perception of college preparedness. These results were consistent with existing literature that also indicated no significant differences of student performance at the high school and post-secondary levels. The results of this study allow school stakeholders to consider other aspects of standards-based grading without the concern of how well it will prepare students for secondary post-secondary education. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]