Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Detention (teacher_id VARCHAR, detention_type_code VARCHAR)
TABLE: CREATE TABLE Teachers (last_name VARCHAR, teacher_id VARCHAR)

### Question ###
Find the id and last name of the teacher that has the most detentions with detention type code "AFTER"?

### Accurate SQL ###

SELECT T1.teacher_id, T2.last_name FROM Detention AS T1 JOIN Teachers AS T2 ON T1.teacher_id = T2.teacher_id WHERE T1.detention_type_code = "AFTER" GROUP BY T1.teacher_id ORDER BY COUNT(*) DESC LIMIT 1