The empty building is the whole advantage
Almost every other building type in this list has a maintenance window measured in hours. A school has one measured in weeks, several times a year, and the dates are known a year in advance.
That is a large operational advantage and it is routinely wasted. Work that needs drying time, curing time or a shutdown - floor stripping and resealing, painting, plant work, larger repairs - can be done properly and unhurriedly in a break, at a lower cost and to a better standard than the same work squeezed around a timetable.
The corresponding discipline is that the break calendar has to be planned months out, because a term break cannot be extended and does not repeat for a while.
Vetting is a precondition
Everyone attending a school site needs to be background-checked and badged. This is not negotiable and it is not a differentiator to be advertised - it is the entry requirement.
Where it does become a practical difference is in how a contractor covers absence. A directly employed crew can guarantee that the person who arrives is a person who has been checked. A model that dispatches whoever is free from a marketplace cannot make the same guarantee on a Tuesday morning when someone calls in sick.
That is the reason this building type in particular rewards knowing who is turning up.
Restrooms are a peak-load problem
School restrooms are unusual. For most of the day they are almost unused. For a few minutes around each bell they take extremely heavy, concentrated use.
Programming them for total daily usage produces a restroom that is clean at 7 AM, adequate at 10 AM and unacceptable by lunch. Programming them for the peak means a nightly reset plus a daytime check between peaks, and consumables stocked for the burst rather than the average.
Running out of paper mid-morning in a school is not the same magnitude of problem it is in an office, and it is entirely avoidable with the right dispenser sizing.
Sports floors are their own specification
A gym floor is the one surface in a school where the finish is a safety specification rather than an appearance one. The coating determines grip, and grip determines injury risk.
Treating it as part of a general floor-care line item is how a hall ends up dangerously slick. It needs its own screening and recoating cycle, its own products, and the cure time that only a break provides.
Cafeteria floors are a different problem again - a grease and traffic load closer to a commercial kitchen than to a corridor - and they should not be programmed as if they were the same as classroom flooring either.
Classrooms are densely occupied
An office is planned around a modest number of people per unit area. A classroom is not, and it runs at that density for hours.
Heating and ventilation behave accordingly: rooms heat up quickly from occupancy alone, air quality declines faster, and filters load faster than a comparable office. None of this is difficult, but a maintenance schedule copied from a commercial office will under-serve it.
Safety items do not queue
Most of the repair list in any building can be prioritised by cost and visibility. Playground defects cannot.
Damaged safety surfacing, a loose fixing, an exposed edge or a trip hazard is urgent regardless of how minor it looks, because the consequence is not a cost - it is a child. Those get reported the day they are seen and fixed ahead of anything on the list that is merely expensive.