Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE STUDENTS (student_id VARCHAR); CREATE TABLE Behavior_Incident (student_id VARCHAR)
### Question:
How many students are not involved in any behavior incident?
### Answer:
SELECT COUNT(*) FROM STUDENTS WHERE NOT student_id IN (SELECT student_id FROM Behavior_Incident)