Classrooms are speech spaces: pupils can only follow a lesson when the teacher's voice stands clear of the background noise, yet hard rooms of glass, plaster and hard floors let sound linger and smear words together. Wooden acoustic panels add absorption that shortens a room's reverberation time, so speech is easier to understand and the space feels calmer. They tame reverberation and echo within a classroom; they do not soundproof it or stop noise passing between rooms, which is a matter of construction and mass. In England, school acoustics are judged against Building Bulletin 93 (BB93), and meeting it is the job of an acoustician modelling each room against measured data, not a claim any panel makes on its own.
Why do classrooms need controlled reverberation?
A classroom only works if pupils can hear the teacher clearly, and speech intelligibility depends on the gap between the teacher's voice and the background noise in the room. In a hard classroom — painted plaster, glass, a hard floor — sound reflects instead of being absorbed, so it lingers and builds up. That lingering reverberation overlaps each syllable with the tail of the last one, masking the quiet consonants that carry most of a word's meaning until speech smears and words run together.
The louder and more reverberant the room, the harder every pupil has to work to follow the lesson, and the more a raised teaching voice adds to the noise. Adding sound absorption shortens the reverberation time, lifts the teacher's voice clear of the noise floor and lets the room settle — the acoustic goal in every teaching space.
How England judges school acoustics: BB93
In England, school acoustics are set by Building Bulletin 93 (BB93) — 'Acoustic design of schools'. It gives a maximum mid-frequency reverberation time for each room type: ordinary new-build teaching spaces sit at around 0.6 seconds, with tighter targets for rooms used by pupils with hearing impairment or special educational needs (SEN), and different figures for halls, music rooms and circulation. Approved Document E of the Building Regulations points to BB93 as the way school buildings demonstrate they comply.
BB93 has a second half: it also caps the indoor ambient (background) noise reaching a room from ventilation, traffic and neighbouring spaces, because that signal-to-noise gap is what governs intelligibility. Absorptive panels address the reverberation side and, indirectly, clarity — but they do not fix a noise-ingress problem, and they are not sound insulation. The full BB93 guide sets out both halves in detail.
Where acoustic panels help most in a school
The most effective place to add absorption in a classroom is usually overhead and high on the walls — an absorbent ceiling does most of the work, with treatment on the upper walls, above furniture and display height where sound reflects freely. A ceiling raft or baffle system suits rooms with exposed services, while slat wall panels add absorption and warmth at head height without being knocked about or written on.
Assembly halls, sports halls and dining rooms are large, hard and lively, so they reverberate strongly and need generous absorption spread across ceiling and high-level wall areas. How much each panel contributes depends on its measured αw or NRC at the mounting used, not a generic figure — and how many panels you need scales with the room's volume.
What about fire performance?
School interiors usually have to satisfy the building's fire strategy as well as its acoustic targets, and the two are separate properties. Untreated timber typically reaches around Class D for reaction to fire; reaching a higher class such as B-s1,d0 generally needs a fire-retardant treatment or specific construction, evidenced by a Euroclass test report to BS EN 13501-1. Where a project calls for it, specify from a fire-rated acoustic series and confirm the class against the tested data rather than assuming it from the timber alone.
Getting it right: model each room, don't trust a label
BB93 is a performance standard, not a shopping list — it sets a target for each room type, not a product to buy. The reliable route is to have an acoustician model each space, work out how much absorption is needed and where to put it to meet the reverberation and noise limits, then select panels whose tested data delivers it. Compliance is the outcome of that modelling against measured data, not a claim printed on a panel.
You can sanity-check whether a room is likely to need treatment, and roughly how much, with a reverberation calculator, then confirm against the room-by-room BB93 figures. To move a project forward, order samples to check the look and finish, or send us the room details through a project enquiry.
Frequently asked questions
Do acoustic panels soundproof a classroom?
No. Acoustic panels absorb sound inside a room to reduce reverberation and echo, so speech is clearer and the space feels calmer. They do not block sound travelling between classrooms or in from outside — that is sound insulation, a matter of walls, floors and construction governed by different standards. If the problem is noise passing through a wall, panels are not the fix.
What reverberation time does a classroom need in England?
For an ordinary new-build teaching space, BB93 sets the mid-frequency reverberation target at around 0.6 seconds, with tighter figures for rooms used by pupils with hearing impairment or SEN, and different targets for halls, music rooms and circulation. Always work to the specific figure for the room type in the current version of BB93.
Do acoustic panels alone make a school BB93-compliant?
Not on their own. Panels control reverberation, which is one half of BB93; the other is limiting indoor background noise from ventilation, traffic and adjacent rooms. A compliant design addresses both, normally with an acoustician modelling each space against measured data rather than relying on a headline panel figure.
Where should acoustic panels go in a classroom?
Usually overhead and high on the walls: an absorbent ceiling does most of the work, with panels on the upper walls above furniture and display height where sound reflects freely. Slat wall panels also add absorption at head height without being easily damaged. The exact amount and placement should follow a room-by-room calculation.