The right school lockers cut corridor congestion, reduce lost property and give pupils a secure place for coats, bags, devices and PE kit. The wrong ones jam, rust, get vandalised or simply don't fit the space. This guide walks through how to specify school lockers properly for a UK primary or secondary setting — sizes, materials, locking, child-safety and how many you actually need.
Why schools choose metal lockers
Welded steel lockers are the standard choice for education because they take daily knocks, resist tampering and last for decades. Laminate and plastic options exist for permanently wet areas such as swimming-pool changing rooms, but for general corridor, cloakroom and classroom use, powder-coated steel is the most durable and cost-effective option. Look for lockers with a fully welded body rather than flat-pack bolted construction — welded units stay square and rattle-free under heavy use.
Getting the size right
School lockers are sold by the number of compartments (or "doors") in each column and by overall width and depth. The more doors per column, the smaller each compartment:
- 1 and 2-door lockers — tall compartments for coats, large bags and PE holdalls. Common in secondary schools and sixth forms where pupils carry more.
- 3, 4 and 5-door lockers — mid-height compartments that suit books, lunch boxes and smaller bags; a good all-round choice.
- 6 to 16-door lockers — compact compartments for phones, valuables, calculators and personal items where space is tight.
As a rough rule, primary pupils need somewhere to put a coat, bag and lunch, so a taller compartment helps; secondary pupils benefit from a balance of height and density so a whole year group fits along one corridor wall. Standard widths come in single, double, triple and wide-format options, with depths chosen to suit bag sizes. Sloping (rather than flat) tops are worth specifying in corridors — they stop litter and bags accumulating on top and discourage pupils from sitting or climbing on the units.
Locking: the most important decision
Lock choice affects daily running as much as security. The main options are:
- Cam locks (key) — simple and cheap, but schools lose keys constantly; you'll need a master key and a replacement system.
- Hasp/padlock — pupils supply their own padlock, which shifts the key problem to them and lets staff cut a lock if needed.
- Coin-return locks — pupils insert a returnable coin or token to lock and retrieve it on opening, so no keys are issued at all. Popular for shared or rotating use.
- Combination locks — no key to lose; codes can be reset between users at the end of the year.
- Electronic/digital locks — keypad or RFID, with staff override and audit options; the highest-convenience choice for larger schools.
For most schools a coin-return or combination lock removes the day-to-day burden of lost keys, while hasp-and-padlock keeps costs down if pupils provide their own.
Child safety and safeguarding
In a school environment, safety features matter. Look for rounded or finger-guarded door edges to reduce pinch injuries, particularly in primary settings, and anti-trap hinges. Lockers should be securely fixed back-to-wall or in bolted-together banks so a column cannot be pulled over — this is essential for younger children. For safeguarding, choose a locking system that allows authorised staff access (a master key or electronic override) so a locker can be opened when necessary.
Finishes and identification
Powder-coated finishes are hard-wearing and available in a range of colours; many schools use colour to zone by year group or house. Numbered door plates or engraved numbers make allocation and roll-call simple. Perforated or vision-panel doors improve ventilation for PE kit and let staff see inside without opening, which can help with both hygiene and safeguarding.
How many lockers do you need?
Decide first whether every pupil gets a permanent locker or whether lockers are shared on a rota (common where space is limited). Map the available wall runs, allow for door swing and circulation space, and remember that high-density multi-door units fit far more pupils per metre of wall than tall single-door units. Banks of lockers should not obstruct fire exits or corridors — check your layout against fire-evacuation routes before ordering.
Charging lockers for devices
With one-to-one device schemes now common, secure charging lockers let pupils store and charge laptops or tablets safely during the day. These combine the security of a standard locker with built-in mains or USB charging — useful for IT suites, libraries and form rooms. See our charging lockers range if device storage is part of your project.
Frequently asked questions
What is the best lock for a school locker? For schools that don't want to manage keys, a coin-return or combination lock is usually best — there are no keys to lose and codes can be reset each year. Where pupils supply their own padlock, a hasp lock keeps costs low and lets staff cut a lock in an emergency. Larger schools increasingly choose electronic locks with a staff override for safeguarding.
What size locker is right for primary vs secondary? Primary pupils need room for a coat, bag and lunch, so a taller 1–3 door compartment works well. Secondary schools usually balance height and density with 3–6 door units so a whole year group fits along a corridor.
Should school lockers be fixed to the wall? Yes. Lockers should be fixed back-to-wall or bolted into banks so they cannot be pulled or tipped over — especially important with younger children.
Metal or plastic lockers for schools? Welded steel for general use (most durable and best value); laminate or plastic only for permanently wet areas such as pool changing rooms.
Specifying with KC Supply
KC Supply stocks Probe steel lockers in 1 to 16-door configurations, single/double/triple and wide widths, with solid, perforated or vision-panel doors, flat or sloping tops, and a full choice of cam, hasp, coin-return and electronic locks — all welded steel and UK-made. Browse the full lockers range or the Probe collection, pair them with cloakroom benches for changing rooms, and read our guide to choosing metal lockers for more on sizing and locking.