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In-House vs Outsourced Cleaning Services in Schools: What to Consider.

  • Writer: Stone Owl Partners
    Stone Owl Partners
  • Jun 11
  • 3 min read

As schools face challenges around managing cost, standards and as more schools start to operate from a centralised model for core functions - the question of whether to keep services like catering or cleaning in-house versus outsourcing them is a live discussion at the moment.


The decision process usually starts with listing pros and cons. One column is the current in-house cleaning cost — salaries, materials, management overhead, sickness cover. The other column is a quote from an outsourced provider. Whichever number is lower usually wins, and the decision gets framed as settled.


Its easy to see why this happens. Cost is real, budgets are tight, and a spreadsheet feels like due diligence. But I've also watched schools make this decision both ways — bringing cleaning in-house to save money, then outsourcing it again three years later for the same reason — and the standard of cleaning barely moved either time. If the cost comparison were the real driver, that pattern wouldn't exist.


What I think actually happens is this: the spreadsheet compares two costs, but it doesn't compare two models of oversight. And oversight, not the underlying cost structure, is usually what determines whether the standard holds.


An in-house cleaning team needs someone with institutional authority who has defined what "clean" means across the estate — by space, by frequency, by method — and who periodically checks the output against that definition. Without that person, an in-house team doesn't fail dramatically, but it can drift. Priorities shift informally, new staff inherit old habits, and the gap between what's delivered and what's needed widens slowly enough that nobody notices until a parent or inspector does.


An outsourced contract needs almost exactly the same thing, aimed in a different direction. Someone has to read the monthly reports, do the walkthroughs, know what the SLA actually says, and be willing to raise it when delivery slides. Without that person, an outsourced contract doesn't fail dramatically either. It just becomes invisible — ticking along, technically compliant, quietly below the standard the school thought it was buying.


Both models, in other words, depend on the same thing: someone inside the institution with the time, the authority, and a defined standard to hold the function against. Neither model is self-managing. The honest question isn't "which model is cheaper" — it's "which model can we actually sustain active oversight within, given who we have and what they're already doing?"


This is where I think the spreadsheet comparison quietly misleads. It treats the in-house option as if the management overhead line item captures the full cost of oversight, when in most schools that line item is really just a salary, and the actual oversight — the standards-checking, the spot inspections, the willingness to have an awkward conversation with a long-serving member of staff — isn't happening at all. And it treats the outsourced quote as the end of the cost, when the contract management role on the school's side is real work that someone needs to be resourced and authorised to do.


Get this right, and either model can work well. I've seen excellent in-house teams where someone senior treats cleaning standards with the same rigour they'd apply to exam results, walking the estate regularly with a checklist and genuinely fresh eyes. I've seen outsourced contracts that work brilliantly because the school appointed someone — not necessarily senior, but credible — as the relationship owner, who knows the provider's account manager by name and isn't afraid to flag when something's off.


Get it wrong, and either model produces the same outcome: a building that feels slightly tired, a standard that's drifted below what anyone intended, and a leadership team that's surprised when it finally gets pointed out.


So before the next spreadsheet gets built, it might be worth asking a different question first. Not "in-house or outsourced?" but "who, specifically, owns the standard — and do they have the time and the authority to actually hold it?" The answer to that question tends to make the cost comparison much easier, because it's usually obvious by then which model that person can realistically run.


About Stone Owl

Stone Owl specialises in operational insight and performance improvement for complex, heritage-led organisations.

We go beyond standard consulting to uncover the real dynamics shaping performance - not just the ones that are easy to document.


Contact us for a no obligation conversation about how we might be able to help - hello@stoneowlpartners.co.uk


*Stone Owl works with universities, independent schools, Oxford and Cambridge colleges, and heritage venues on operational process improvement and project implementation.


 
 
 

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