Chaparral High School is on lockdown Wednesday morning after an unspecified threat was made to the school.
Scottsdale police are asking the public to stay away as they work to clear the school.
No injuries are being reported.
Police say no credible threat was found after an initial search of the school, but there is still a large police presence there.
This is the latest of many recent investigations into school threats across Arizona. Police departments across the Valley continue to emphasize the real trouble and criminal charges that come with making threats toward a school.
A Surprise 14-year-old was arrested Tuesday for making a threat toward Valley Vista High School .
A Buckeye 12-year-old was arrested Monday for a threat to a teacher at Desert Sunset Elementary School .
On Sunday, Buckeye police announced the arrest of a 12-year-old girl who was involved in a Milwaukee school threat investigation .
On Thursday, a teenage boy was arrested for allegedly making threats to a dozen Valley schools .