Table schema:
CREATE TABLE Detention (datetime_detention_start VARCHAR, teacher_id VARCHAR); CREATE TABLE Teachers (teacher_id VARCHAR, last_name VARCHAR)

Question: Find the start and end dates of detentions of teachers with last name "Schultz".
SQL: SELECT T1.datetime_detention_start, datetime_detention_end FROM Detention AS T1 JOIN Teachers AS T2 ON T1.teacher_id = T2.teacher_id WHERE T2.last_name = "Schultz"