The Santa Cruz County Sheriff's Office investigated rumors of an online threat made against the school.
The threat, made against Cholla on Tuesday, wasn't credible. Out of caution, the student was still kept home while school went on as usual.
The school was in lockdown for a bit while the sheriff's office investigated. In the end, no one was arrested and the lockdown was lifted.
Seneca Turner, who also is a member of the school's security staff, allegedly was sending explicit messages to a student.
The proposal, presented to the board Tuesday night, would redraw the boundaries for Catalina, Palo Verde, Rincon, and Tucson High Schools.
The judge ruled that a law passed by the state banning the studies was unconstitutional and cannot be enforced.
The donation will go toward continued research into global climate change and other "grand scientific challenges" affecting daily life.
Chomsky told the university he fell in love with Tucson's mountains and desert. It has "an atmosphere that is peaceful and manageable."
When's the first day of school in Tucson? That, and other must-know dates for parents, students and teachers.
The threat came in overnight via social media.