In grading, one of the most common errors is made in combining two or more different test scores. This study aimed to investigate the agreement of grades calculated by weighting raw scores and standard scores. Research Methods: In this simulation study, data were simulated for midterm and final measurements. Nine conditions [3 (class level: poor, average, good) x 3 (standard deviation (SD) difference (0, 10, and 20 units)] were considered. The sample size for each measurement was taken as 60 and the replication number set to 100.

Character education is now a topic that is often discussed in seminar forums. But there is not yet a standard instrument in measuring the internalization of character education. This study aims to measure the validity and reliability of character education. The instrument used to measure internalization of character education is a closed questionnaire. The questionnaire was composed of 18 questions. The respondents in this study were 158 students. Analysis of the validity test using the Pearson Product Moment correlation formula. While the reliability test uses Cronbach's Alpha. The validity test results are a valid instrument to measure the internalization of character education values, that is, all items value α < 0.05. The reliability test results are a reliable instrument to measure the internalization of character education values, namely with a Cronbach's Alpha score of 0.846.

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