Ballot Math / Mesa Unified / Prop 419

Ballot measure: Mesa Unified School District

Proposition 419: A $449 million bond for Arizona's largest school district

Mesa Unified School District No. 4, about 50,000 students across 80 schools. The governing board voted 3-2 in May 2026 to put this bond on the ballot, after more than two hours of public comment. It appears on the ballot of everyone inside the district's taxing boundaries, including some households in neighboring cities whose children attend school elsewhere (see our page on why this is on your ballot).

In one sentence: Mesa Unified may borrow $449 million for roofs, air conditioning, plumbing, safety, and technology, repaid through the secondary property tax, at a rate the district projects will stay at or below today's.

What the money buys, per the district's fact sheet

  • 70 percent: building infrastructure. Air conditioning and HVAC, plumbing, lighting, electrical systems, and school consolidation projects.
  • 15 percent: targeted site-level needs. The district emphasizes that every school receives funding from this bond.
  • 10 percent: safety, security, and technology. Secure front lobbies, updated security cameras, network infrastructure.
  • 5 percent: career and technical education.

The district has published a list of 538 planned projects. This is a repair-and-replace bond, not a growth bond: the top of the list is aging mechanical systems in a district whose enrollment is declining, which is also why "consolidation" appears in the largest bucket (see the fine print).

The math for your household

About $229 a year for 13 years, on a $250,000 home.

That is the Arizona Republic's figure. The mechanism behind it: Mesa's current total bond tax rate is $0.9530 per $100 of assessed value. This bond's estimated cost is $0.81 per $100, and because older bonds are retiring as this one is issued, the district projects the overall bond rate stays at or below today's $0.9530 throughout the program. Higher-value properties pay proportionally more: the same rate on a home assessed at twice the value costs twice as much.

A YES vote

The district may sell up to $449 million in bonds for the projects above. Your bond tax rate stays roughly where it is now, instead of declining as the old bonds retire.

A NO vote

No new borrowing. As existing bonds are paid off, your Mesa Unified bond tax rate falls. The roofs, air conditioners, and plumbing still age, and the district pays for whatever it can out of its regular capital budget, defers the rest, or comes back and asks again.

The strongest case for YES

  • The need is mechanical, not ideological. Air conditioning in Phoenix is not an amenity. A district of 80 aging campuses has a continuous replacement cycle for HVAC, plumbing, and roofs, and bonds are how Arizona districts pay for it; there is no other pot of money at this scale.
  • The rate framing is unusually honest. Because old bonds retire as these are sold, the projected rate does not rise. The choice is framed accurately as flat versus falling, and bond opponents got their say in a 3-2 board vote that was genuinely contested.
  • Deferral is not free. Emergency HVAC replacement mid-summer costs more than planned replacement, and failing systems close schools.

The strongest case for NO

  • "No tax increase" needs its footnote. The rate stays flat only because you keep paying it. Without the bond, your Mesa school tax bill would go down as the old debt retires. A yes vote chooses to keep paying roughly $229 a year (at $250,000 of value) for another cycle instead.
  • Interest is part of the price. $449 million of principal comes with years of interest payments on top, a point raised by opponents at the May board meeting.
  • Enrollment is falling. Critics ask why a shrinking district needs to reinvest at this scale in all 80 campuses, and note that the largest bucket includes consolidation, which means some of this money prepares the district to operate fewer buildings, a plan voters are entitled to scrutinize.
  • A prior Mesa bond failed. The board brought this measure back after voters said no before; a second no is a legitimate instruction, not an oversight.

The fine print

  • Two propositions share the number 419 in Arizona this year. This is Mesa Unified's school bond. It has nothing to do with Pima County's Prop 419, a transportation tax decided in March 2026.
  • The word "consolidation" in the 70 percent bucket deserves attention. It can mean efficiency (closing underused campuses saves operating money for decades) or it can mean your neighborhood school's future is in this bond's project list. The district's 538-project list is the document to read if that question matters to you.
  • Bond approval authorizes the borrowing ceiling, not each project. The governing board controls the actual project sequence, which is why the board races on the same ballot matter alongside this one. Its companion measure, Prop 420, would let the district sell five surplus properties; they are separate questions and either can pass without the other.

How to vote without getting your ballot rejected

  • Mail it by Tuesday, October 27, 2026. After that day, do not mail it: use a drop box or a vote center.
  • It must be received by 7 p.m. on Election Day, Tuesday, November 3, 2026. Postmarks do not count.
  • Sign and date the affidavit envelope, and write a current phone number on it. If your signature is questioned, that number is how the county reaches you.
  • Leaving any item blank is allowed. It does not affect the rest of your ballot.

Sources

Ballot Math: analysis only, no endorsements. Figures above are the district's projections and the Republic's reporting; the official pamphlet is linked because we want you to check us. Back to Ballot Math home.