Today, the High School was placed on a lock down in place due to a threat that was received via a phone call to the high school office.  During the time of the lock down, our second grade students from Green Valley were in the High School Natatorium for their swim lessons.  The students were able to continue their activities with minimal disruption and were delayed 5 minutes in their return to Green Valley.  Local police ensured the safety of the students as they were loaded on their bus for their return to Green Valley.