Clicking on the Schools button on the left side of the screen opens the School Form.
Choose the school for which you want to set the default GPA scale and then click on the Marking System tab.
Important: When the gradebooks are created this will be the default GPA scale they all use. The teachers can change theirs but it would be a best practice to decide beforehand what the scale should be and then set it in the SchoolWise program. Then all of the gradebooks will have this scale automatically.