Create a course Enable aggregations in site settings. Go to admin/settings.php?section=gradecategorysettings and enable all in Available aggregation types Create some scales Click edit category for course item Ensure you don't see Weights adjusted checkbox Go to gradebook setup page and click Add new category Change aggregation to Weighted mean of grades Ensure you can select grade type If gradetype is value ensure you see grademin and grademax. If not grademin and grademax should not be visibe IF gradetype is scale ensure you can select scale Save changes Add some grade items in category and add some grades to those. Override category total for some student Click edit category to open edit modal Ensure you see a warning 'This category has associated grade items which have been overridden. Therefore some grades have already been awarded, so the grade type cannot be changed. If you wish to change the maximum grade, you must first choose whether or not to rescale existing grades.' Ensure you can not change grade types Ensure you see 'Rescale overridden grades' Ensure you see warning 'You must choose whether to rescale existing grades or not.' when saving modal if 'Rescale overridden grades' is not set Set category aggregation to 'Weighted mean of grades' Create subcategory category2 Open edit category modal for category2 Ensure you don't see Weight adjusted checkbox