School transportation budgets are built months before buses roll, which makes them unusually exposed to a fuel spike. This year the spike is large: diesel averaged $5.62 a gallon as of this week, according to AAA, against $3.70 a gallon at the same point last year.
That matters because the American school bus fleet runs on diesel. About 90% of the country's roughly 480,000 school buses burn it, so a $2 move in the per-gallon price lands almost directly on district budgets. Districts have been absorbing it since spring, when fuel prices climbed following the war with Iran. By May, a survey conducted by organizations representing school superintendents and bus companies found more than half of responding districts were already over budget on fuel.
What the squeeze looks like in a district
The clearest way to understand a transportation budget is to hear an administrator convert it into staff. In Washington state, Jacob Kuper, assistant superintendent of finance and operations for the Yakima School District, a system of about 15,500 students, estimated higher diesel costs could run his district 38% more this school year, roughly $130,000. "The equivalent of one teacher," he said.
So Yakima went after the miles. The district consolidated bus routes, staggered bell times so the same buses could cover more runs, cut the total number of trips, and put more students on each bus. Kuper said those changes have the district on track to save $400,000 to $500,000, considerably more than the fuel increase itself.
The savings come with a cost that shows up somewhere other than the budget. "You have fewer drivers with longer routes or longer total hours per day," Kuper said, in a job that already struggles to keep drivers. He also noted that Yakima is comparatively lucky: "We're fortunate we have a small geographical footprint" compared with rural districts, so consolidated routes have not added much time to students' rides. In a district covering hundreds of square miles, the same math produces a much longer morning for a child.
The playbook districts are running
Yakima's approach mirrors the national pattern. That May survey found 40% of districts consolidating routes and about 20% limiting non-required trips, with field trips typically first on the block. Others reported considering a switch away from diesel entirely.
In Idaho, the Boise district, which serves about 22,000 students, has been reducing stops per route. "Every stop adds mileage and cost," said transportation supervisor Lanette Daw. Boise also added eight electric buses this week, funded through a federal Clean School Bus Program award, and is watching whether they cut fuel spending over the long run. Even so, the district's transportation costs are up about $600,000 this year.
That is the same federal program that recently put 75 electric buses into DeKalb County, Georgia, where officials said the roughly $400,000 sticker price per electric bus was impossible to justify without the grant. The current diesel spike changes that arithmetic, at least on paper, though the buses take years to arrive and require charging infrastructure, so they are not a fix for this year's budget.
Switching fuels is also not automatically cheaper. In California, Tom Thorpe, transportation director for the Monterey Peninsula district of about 9,300 students, has moved most of his roughly 50 buses from diesel to gasoline. But state and local taxes push local gas prices well above the national average: about $5.77 a gallon in Monterey this week against a national average near $4.10, which can make gasoline there costlier than diesel elsewhere. Thorpe saw the shortfall coming and went back to his superintendent twice. "I didn't project enough, boss. Can we get a little bit more?" He got it, and the district "squeaked through the rest of that quarter."
The part that carries into next year
The quiet risk in all of this is where the money is coming from. Elleka Yost, director of advocacy and research at the Association of School Business Officials International, one of the groups behind the survey, told NPR that "many districts are tapping reserves or rainy-day funds as a temporary solution," while warning that doing so weakens a district's ability to absorb the next shock.
That is the structural problem underneath a fuel story. Reserves are the buffer that keeps a bad year from becoming a crisis, and districts spending them on diesel now have less cushion for an enrollment drop, a facilities failure, or a state funding change later. The districts already carrying heavy long-term obligations are the ones with the least room, a pattern visible in the recent analysis of fiscal stress among large districts, and in the outright crises that hit Dublin, Georgia and Los Angeles this year.
For families, the visible effects will mostly be a fuller bus, an earlier stop, or a canceled field trip. Kuper described the goal in the terms most administrators use right now: keep the buses rolling, stay on budget, and "keep the reductions outside the classroom, if possible."
Sources
NPR: School districts facing the high cost of diesel for school buses
Fuel prices per AAA as reported by NPR. District enrollment figures from allk12's analysis of National Center for Education Statistics (NCES) data, 2024-25.
