How many behavior incidents are there in record?
select count(*) from behavior_incident
Show me the last name of students that were in any incidents.
select t2.last_name from behavior_incident as t1 join students as t2 on t1.student_id = t2.student_id
Give me the start and end dates of Fahey's ones.
select t1.date_incident_start, date_incident_end from behavior_incident as t1 join students as t2 on t1.student_id = t2.student_id where t2.last_name = "Fahey"