Task: Text to Code
Input (English): Find the ids and first names of the 3 teachers that have the most number of assessment notes?
Output (English): SELECT T1.teacher_id ,  T2.first_name FROM Assessment_Notes AS T1 JOIN Teachers AS T2 ON T1.teacher_id  =  T2.teacher_id GROUP BY T1.teacher_id ORDER BY count(*) DESC LIMIT 3