Check sort order: Install a new site. Check the current number of categories: ` select count(id) from mdl_course_categories; ` We call it "NUM_OF_CAT".  If it is a fresh install, the  NUM_OF_CAT will be "1" (only Miscellaneous category) We will use "NUM_OF_CAT" to calculate sort order values for categories and courses) Set $CFG->maxcoursesincategory = 20000 in config.php Create 2 categories: Category A and Category B Check the sort order of these two categories: ` select name, sortorder from mdl_course_categories; ` Verify: The sortorder for Category A equals 40000 The sortorder for Category B equals 60000 Create 2 courses in Category A: Course 1 and Course 2 Check the sort order of these two courses: ` select fullname, sortorder from mdl_course; ` Verify The sortorder of course 1 is equal to 40002 (Sort Order Of Category A + 2) The sortorder of Course 2 is 40001 (Sort Order Of Category A + 1)