This metric shows the percentage of students graduating in four years. Graduation rates are calculated by the Oklahoma State Department of Education (see source details) by dividing the number of students who graduated in four years from a school by the number of students who entered the school in ninth grade or transferred in later. Students who transfer from the school to another diploma-granting school are removed the denominator of the calculation. Data is mapped based on the geographic location of the school. Note: 2021 graduation rates are not included in the data due to reporting changes during the COVID-19 pandemic.