From 12 News:

PHOENIX — An organization of moms against gun violence is applauding a recent decision by the Phoenix Union High School Board.
The board voted unanimously last week to require the parent or guardian of the district’s 27,000 students to read and sign a gun storage safety form.
"This is just an obvious thing we can do to prevent future tragedies,” said board member Lela Alston.
The "Secure Storage Notification Resolution" requires that gun storage and safety information be included in the student handbook of all 27,000 students of the district's 20 high schools.
The resolution was prompted by the groups Moms Demand Action and Students Demand Action For Gun Sense in America. It highlights how unlocked guns play a prominent role in unintentional shootings involving children, gun suicides and campus shootings.
Phoenix Union Board President Stephanie Parra said the resolution is a small but meaningful step to educate parents.
“From time to time, guns have made an appearance on campuses," said board president Stephanie Parra. “When we speak to moms, often it's because the parent did not properly store their firearm at home.”
Phoenix Union joins Denver Public Schools and several districts in California that have approved secure gun storage awareness campaigns.
A spokesperson for Moms Demand Action said they hope this is the beginning of a nationwide movement by school boards. It is viewed as a way to promote gun safety that does not require an act of Congress.
On the surface to some, this doesn’t seem like a big deal. What this does though is create a “legal” binding with the district that parents must practice “safe storage”. What happens if parents don’t? Are they sued by the district? Is their child suspended/expelled as punishment? Will students be able to report to school officials if their parents don’t lock up their emergency nightstand gun and get mom & dad trouble (shouldn’t have taken that Xbox away for not doing homework)? Will a friend visit one of their pals who‘s parents have an antique shotgun on the wall and report it to the district? Well, in their current handbook, students can report it to a teacher/staff member and the staff member can start the paper trail (would go under “Other”).

Also in the district documents, specific data collection on, you guessed it, GUNS & AMMO:
