Task: Text to Code
Input (English): Step 1: For each row in Detention table, find corresponding rows in Ref_Detention_Type table and in Teachers table.
Step 2: find detention_type_description of the results of step 1 whose last_name equals Schuster
Output (English): SELECT T1.detention_type_description FROM Ref_Detention_Type AS T1 JOIN Teachers AS T2 JOIN Detention AS T3 ON T1.detention_type_code = T3.detention_type_code AND T3.teacher_id = T2.teacher_id WHERE T2.last_name = "Schuster"