Task: Text to Code
Input (English): Step 1: find the School of school table.
Step 2: find the Nickname of school_details table for which Division equals Division 1.
Step 3: show the rows that are in the results of step 1 but not in the results of step 2
Output (English): SELECT T1.School FROM school AS T1 EXCEPT SELECT T2.Nickname FROM school_details AS T2 WHERE T2.Division = "Division 1"