If you ask any teacher in the UK about the toughest part of the autumn or winter term, they will mention the “winter bug”. The endless cycle of colds, and the struggle to keep attendance figures high when half the class is off sick.
As experts in school cleaning, we at Sentrex know that teachers are already stretched thin. You are educators, social workers, and administrative wizards; you shouldn’t have to be infection control specialists too.
In this guide, we reveal the seven classroom germ hotspots that are most frequently overlooked, offering practical, teacher cleaning tips to help you maintain a safe learning environment without adding hours to your workload.
Looking clean doesn’t mean clean!
There is a distinct difference between a classroom that looks tidy and one that is hygienically clean. A desk might be free of clutter, but if it hasn’t been wiped down with appropriate child-safe cleaners, it could still be hosting harmful viruses
Effective classroom hygiene is about breaking the chain of infection. Research suggests that viruses can survive on hard surfaces for up to 48 hours. In a primary school setting, where younger children are less likely to practice perfect hand hygiene, high-touch surfaces can trigger illness.
Addressing these hygiene gaps isn’t just about health; it’s about educational outcomes. Fewer germs mean fewer sick days for pupils and staff, leading to consistent teaching and better results.
For a deeper dive into the reality of hygiene in education, read our analysis on how clean schools really are and the biggest hygiene gaps.
The Dirty Seven: Overlooked classroom germ hotspots
1. The interactive whiteboard and accessories
The modern classroom is increasingly digital, and the interactive whiteboard is the focal point. While the screen itself might get a wipe when it becomes smeary, the accessories are the real culprits.
Stylus pens, remote controls, and more are passed between teachers and pupils multiple times a day. These items are rarely subjected to disinfecting classroom protocols because people are afraid of damaging the electronics.
A simple solution is to use disinfectant wipes specifically designed for electronics (containing 70% isopropyl alcohol) to clean styluses and remotes daily. Keeping a small tub of wipes next to the board as a visual reminder can encourage usage.
2. The reading corner: Soft furnishings
Unlike hard plastic chairs, soft furnishings absorb sweat, saliva, and spills, trapping bacteria and allergens deep within the fibres. In many classrooms, these items are only cleaned during the holidays, meaning they accumulate a term’s worth of grime.
You should choose covers that are removable and machine washable. If that isn’t an option, use a fabric sanitiser spray that is safe for children. In addition, you should ensure your cleaning contractor schedules steam cleaning for these items. Learn more about why schools need regular deep cleaning.
3. Shared learning resources
Items like shared glue sticks, are essential for creative learning but difficult to clean. A tub of maths cubes might be used by thirty children in a single morning. If one child coughs into their hand before diving into the tub, the entire resource becomes a germ hotspot.
You don’t need to wipe every individual brick. Place hard plastic items in a mesh laundry bag and run them through a dishwasher (if available)or submerge them in a bucket of diluted sterilising fluid once a week. For more on managing shared items, see our guide on the most overlooked germ hotspots in schools and how to fix them.
4. The sink area: Taps and soap dispensers
It sounds ironic, but the place where we go to get clean can be one of the dirtiest. While children wash their hands, they touch the tap and the soap dispenser before their hands are clean.
Furthermore, damp environments promote bacterial growth. The area around the sink, including the splash back and the paper towel dispenser lever, creates a biofilm that regular wiping with a dry cloth won’t remove.
General cleaning should involve spraying and leave disinfectant on taps for the recommended contact time (usually 30–60 seconds) before wiping away.
5. Computer keyboards and mice
Whether it is the teacher’s desk or a shared computer in the IT suite, keyboards are notorious for harbouring crumbs, dust, and bacteria. Studies have shown that a computer keyboard can contain more bacteria than a toilet seat.
In a busy classroom, the teacher’s desk is often a landing pad for children’s homework books, dirty tissues, and borrowed stationery, all of which migrate germs onto your keyboard.
Ensuring users shake keyboards upside down weekly to remove debris and wipe keys with disinfectant daily can greatly combat cumulative germs.
6. Water bottle trays and lunch crates
Almost every primary classroom has a plastic tray or crate where water bottles are stored. These trays are often damp from leaking bottles, creating a perfect environment for mould and bacteria. Because they are ‘storage’, they are rarely emptied and scrubbed out during term time.
Make it a Friday afternoon job for a “monitor” (if age-appropriate) or a TA to empty, wash, and dry the tray thoroughly.
7. Chair backs and desk edges
Cleaners usually wipe the flat top of the desk. However, children constantly grip the edges of the desk and the top back of their chairs when standing up or moving around. These gripping points collect layers of oils and dirt that are frequently missed during routine cleaning.
When doing a spot check or preventing the spread of germs in schools, ensure the cloth goes over the edge and round the back of the chair.
When professional cleaning is essential
While teachers can manage day-to-day tidiness, deep cleaning requires professional intervention. There comes a point where desk germs and carpet bacteria require industrial equipment to remove effectively.
The role of professional cleaners
Daily contract cleaning should cover the basics: vacuuming, emptying bins, and sanitising toilets. However, periodic deep cleans are vital for:
- Steam cleaning carpets and upholstery.
- High-level dusting (light fittings and ventilation).
- Sanitising learning resources en masse.
Cleanliness and Ofsted
While Ofsted doesn’t grade cleanliness as a standalone subject, the “Personal Development” and “Leadership and Management” categories consider the safety and welfare of pupils. A dirty or unsafe environment is a red flag.
Read more about the link between hygiene and inspection outcomes in our article: Can school cleanliness improve your Ofsted rating?
Creating a classroom cleaning checklist
To help you stay on top of these hotspots, we recommend a simple tiered approach. This ensures school cleaning duties are shared and manageable.
Daily (Teacher/TA):
- Wipe down the interactive whiteboard accessories.
- Sanitise the teacher’s keyboard and mouse.
- Ensure sinks are clear of paper towels.
- Wipe down water bottle spills immediately.
Weekly (Cleaning staff/Deep clean):
- Sanitise all door handles, light switches, and chair backs.
- Wash out water bottle trays.
- Disinfect shared manipulatives (LEGO, counters).
- Vacuum reading corner rugs thoroughly.
Termly (External contractors):
- Steam clean carpets and soft furnishings.
- Deep clean all washrooms and descaling taps.
- High-level cleaning of vents to improve air quality.
Trusting Sentrex with Your School’s Health
Keeping a classroom healthy is a team effort. By identifying these 7 hidden classroom germ hotspots and making small adjustments to your routine, you can significantly reduce the spread of illness. However, the heavy lifting should always be supported by a professional cleaning team that understands the nuances of school cleaning.
At Sentrex, we pride ourselves on understanding the unique challenges of the education sector. We know that schools have tight budgets and even tighter schedules. We don’t just clean; we provide peace of mind.
Our staff are fully trained, DBS checked, and experienced in working within educational settings. We use eco-friendly, child-safe cleaners wherever possible to protect pupils with allergies and sensitivities.
Whether you require a one-off deep clean following an outbreak or a comprehensive daily cleaning contract, we are here to support your school. View our credentials and safety standards at Our Accreditations.
Ready to upgrade your school’s hygiene strategy? Contact Us today for a consultation and let us help you create a safer, healthier learning environment.
