PXU hears Grand Canyon Institute report on weapons-detection pilot as students, staff and parents split on expansion

The Phoenix Union High School District Governing Board heard a presentation Feb. 6 on the district's Advanced Weapon Detection Systems pilot and a related evaluation by the Grand Canyon Institute.

Dr. Dave Wells of the Grand Canyon Institute told the board the evaluation showed "suggestive" evidence that the pilot reduced incidents involving firearms and a statistically strong reduction in long-blade knife incidents at the pilot sites, and that staff and parents favored keeping the systems. Wells said student perceptions of safety did not show a statistically significant change in the study period.

The report covered two pilot high schools and several control sites and used pre- and post-pilot surveys of students, staff and parents, focus groups, and district incident records. Wells said the pilot sites recorded fewer reported incidents of knives with blades 2.5 inches or longer and that districtwide firearm reports also declined in other districts that implemented AWDS, citing data from Mesa Unified and Agua Fria.

The presentation prompted more than an hour of public comment. Dozens of students, parents, teachers and principals addressed the board. Maryville student body president Jahir Hernandez told the board that "60% of students" responding to a survey he circulated supported returning weapon detectors because they made students feel safer. Several other students, including Tanisha Hillis and Marisol Alvarado, urged the board to reject expansion of metal detectors and SROs, saying the devices criminalize students and damage school climate.

Staff and some principals urged retention or expansion. Jessica Fimiak, micro-school leader at the Gifted and Talented Academy at Maryville High School, said the AWDS pilot gave her school "tremendous peace of mind" and reported no delays in entry at her site. North High School principal Vanessa Casillas told the board an SRO at her school had been "amazing" and urged the board to permit other campuses to access similar resources.

Board members questioned technical performance and oversight. Clerk Olivia Oliver asked whether simulated items have been tested through the machines; Dr. Wells said informal tests had been done but the pilot did not include a systematic, vendor-run test protocol. A district representative said the vendor's documented calibrations exist but the district did not run daily simulated-item checks during the pilot.

Board members asked for vendor specifics on metal detection sensitivity. Board Member Francisco Pastor Rivera asked whether the machines mainly detect ferrous (iron-based) metals at the setting used in PXU; district staff said the vendor indicated the active setting in the pilot was tuned primarily to ferrous metals and that raising sensitivity to detect non-ferrous alloys would change the device behavior and lead to more activations.

Dr. Wells emphasized limits: firearm incidents are relatively rare and surveys can reflect many influences beyond the machines, including social-media threats and other safety measures. He also reported that days following firearm incidents show measurable enrollment declines at affected schools.

President Napa framed the choice as layers of protection in a community where violence occurs: "Doing nothing is not an option," she said, adding that the district must weigh options while continuing counseling and other supports.

The board did not take a final vote on whether to expand the AWDS pilot at the Feb. 6 meeting; the presentation and public comment were informational. Board members asked staff to follow up with vendor documentation on detection settings, test protocols for simulated items, and data on how frequently the systems activated during the pilot.

The district also heard multiple public-safety-related items in the same meeting, including a request from a parent about a transportation complaint; the board asked the superintendent to investigate that bus incident separately.

Wells's full presentation and the Grand Canyon Institute report were entered into the meeting record; board members and staff said they would use the report as one factor alongside focus-group input and other safety data as they consider next steps.