San Francisco Unified's first new school in 11 years opens Monday in Mission Bay: an 80,000-square-foot, four-story building that cost $95.4 million to construct and will greet its inaugural class with only pre-K and kindergarten students inside.

The gleaming campus lands in the middle of a district that, by its own projections, has roughly 14,000 empty seats and expects to lose another 4,600 students by 2032. That contradiction has been framed elsewhere as hypocrisy — closing schools with one hand, cutting ribbons with the other. But the more useful story is about money that legally cannot mix: the building was paid for by a construction-only bond that cannot touch a single teacher's salary, even as the district reached budget balance only through repeated rounds of cuts. Mission Bay adds a new operating liability at the exact moment SFUSD needs to shrink one.

As thousands of students head back to San Francisco's public schools Monday, Superintendent Maria Su is opening the district's newest campus and defending a decision that looks, on its face, indefensible. Why build a school when you already have too many?

Su framed the opening as keeping a decades-old civic promise, in an interview with ABC7's Lyanne Melendez. The city, she said, had assured a fast-growing Mission Bay it would get a public school for the families moving in. That neighborhood — the fastest-growing in the city over three decades, now home to UCSF, the Chase Center, and OpenAI's headquarters — was pledged an elementary school in a 1998 redevelopment plan and never got one.

The promise is real. So is the arithmetic Su did not dwell on.

Two budgets that can't talk to each other

Mission Bay School was paid for by Proposition A, the $115 million school bond voters approved in 2016, according to The San Francisco Standard's coverage (external source, opens in a new tab) of Thursday's ribbon cutting. Bond dollars are capital dollars: they can pour concrete and raise an 80,000-square-foot building under a $95.4 million construction contract, but by law they cannot pay a teacher, a counselor, or a custodian. Those salaries come from the operating budget — a separate account, and the one that has been bleeding.

So the "close schools but open a new one" outrage misreads the machinery. The district could not have moved a dime of the Mission Bay construction money to keep a struggling campus alive even if it had wanted to. What it can do — and now must — is staff and maintain a brand-new four-story building out of the same operating fund it has spent two straight years shrinking.

That fund is the real constraint. Su's first budget, a year ago, wiped out a $113 million deficit — but did so by removing more than $110 million and roughly 400 staff positions, on top of 345 jobs given up through buyouts, as KQED detailed at the time. This year Su went further, telling ABC7 the board had approved a balanced three-year plan in June with what she called a healthy reserve. The reserve is genuine. Both balances were achieved by subtracting, not by winning students back.

So the "close schools but open a new one" outrage misreads the machinery.

A big building, a small class

The new campus opens almost empty by design. Per the district's announcement (external source, opens in a new tab) last fall, Mission Bay will offer only general-education pre-K, transitional kindergarten, and kindergarten in year one, adding a grade annually until it reaches a full TK–5 of more than 400 students by 2032. That is an operating cost engineered to climb every year for the next six — layered onto a budget the district has just proven it has to cut.

There is a further catch that undercuts the "neighborhood school" branding. SFUSD places students through a citywide lottery, not by address. The Standard reported that a founding steering-committee member knows a Mission Bay family whose four-year-old was shut out of transitional kindergarten at the new school and sent instead to a campus in the Bayview. Living nearby buys a tiebreaker, not a seat.

Su says the enrollment fix is the one she keeps deferring: simplify the lottery first, then revisit whether some schools must combine — being "creative," as she put it, about consolidation. That overhaul is stalled until the end of the decade. The closure fight, shelved after the last superintendent's exit, is set to reopen. Mission Bay, meanwhile, opens Monday — a $95 million answer to a promise from 1998, arriving in a district that no longer has the students, or the operating dollars, to match its footprint.