Acoustic panels for classrooms are absorptive wall and ceiling panels that soak up reflected sound inside a teaching room, shortening its reverberation time so children hear the teacher clearly. They tackle in-room echo — the smearing that harms speech intelligibility, especially for pupils with hearing or SEN needs — and help work toward BB93's targets. They do not soundproof: stopping noise passing between classrooms is sound insulation, a wall and floor construction matter.
Why classrooms need reverberation control
A classroom is a small, hard room built for one thing above all: a teacher's voice reaching every child. Bare plaster, glazing, whiteboards and hard floors reflect that voice back and forth, so each word overlaps the next in a wash of reverberation. The result is smeared, less intelligible speech, and the pupil has to work harder to separate the teacher's words from their own echoes.
Children are more vulnerable to this than adults, because they are still building language and cannot 'fill in' a misheard word from context as readily. The effect is sharper still for pupils who are hearing-impaired, who are learning in an additional language, or who have special educational needs (SEN), for whom a lively, echoey room can make a lesson genuinely hard to follow. Controlling reverberation is about speech intelligibility, not just comfort.
What BB93 asks for in a teaching room
Classrooms in England are covered by BB93 (Building Bulletin 93), the standard Approved Document E uses to judge acoustic compliance in schools. BB93 sets a maximum mid-frequency reverberation time (Tmf) by room type: for an ordinary new-build teaching room it sits around 0.6 seconds, with tighter figures for rooms used by pupils who are hearing-impaired or have SEN, and more relaxed ones for spaces such as circulation. Work to the exact figure for the room type in the current version of BB93 rather than a remembered number.
Reverberation is only half of it. BB93 also caps the indoor ambient noise level — background noise from ventilation, traffic and adjacent rooms — because intelligibility depends on the gap between the teacher's voice and the noise floor. Absorptive panels bring reverberation down, but they do not by themselves fix noise arriving from outside the room. That is why a compliant classroom is one an acoustician has modelled against measured absorption data, not one signed off on a panel count.
Where to place absorption in a classroom
The ceiling is usually treated first. It is normally the largest uninterrupted surface in a classroom, it faces the hard floor where reflections build, and it stays clear of displays, furniture and pupils, so it does the most work per square metre. An absorptive ceiling, or ceiling rafts hung below a hard soffit, is the mainstay of most teaching-room schemes.
After the ceiling, the upper walls are the next priority: absorption placed above head height catches reflections travelling between the room's hard vertical surfaces without being knocked, drawn on or hidden behind displays. Lower walls tend to be busy with boards, windows and coat pegs, so treatment concentrates higher up. Where the absorption goes is a room-by-room judgement based on the classroom's shape, height and how its reflective surfaces are arranged.
How much absorption a classroom needs
Reverberation depends on the room's volume set against how much absorption it already contains, so the amount of treatment is a quantity you can calculate rather than guess. Set the reverberation time the room should reach — for a teaching room, the relevant BB93 Tmf figure — then add absorptive area until the maths meets it. Turning that target into a realistic panel count gives a defensible starting point, which an acoustician should then confirm against each product's measured data for the room in question.
Absorption is not soundproofing between classrooms
This is the line that matters most. Acoustic panels absorb sound inside the classroom: they shorten reverberation and calm echo so the teacher is easier to hear. What they do not do is soundproof the room. They cannot stop a lesson, a noisy corridor or the class next door being heard through the wall — blocking sound between rooms is sound insulation, and it depends on the mass and construction of the walls, floor and doors, not on absorptive panels.
So if the problem is echo and clarity *within* the teaching room, absorption is the right tool. If the problem is noise passing *between* classrooms, that is a separate, construction-led question about the building fabric, and adding absorptive panels to one side will not solve it. The two jobs are often confused; keeping them apart is what stops money being spent on the wrong fix.
Frequently asked questions
What reverberation time does BB93 want in a classroom?
For an ordinary new-build teaching room, BB93's maximum mid-frequency reverberation time (Tmf) is around 0.6 seconds, with tighter figures for rooms used by hearing-impaired pupils or those with SEN. These are the values BB93 sets; always work to the specific figure for the room type in the current version of the standard rather than a remembered number.
Will acoustic panels stop noise from the classroom next door?
No. Acoustic panels absorb sound within a room and reduce echo, but they do not stop noise passing through the wall, floor or ceiling from an adjoining classroom or corridor. Blocking sound between rooms is sound insulation, which depends on the mass and construction of the building fabric, not on absorptive panels. That is a separate, construction-led matter.
Do acoustic panels help children with hearing or SEN needs?
Reducing reverberation makes the teacher's voice clearer against its own echoes, which particularly helps pupils who are hearing-impaired, have SEN, or are learning in an additional language — BB93 sets tighter reverberation figures for the rooms these pupils use. Panels address in-room echo; noise arriving from outside the room and the wider design are also part of a compliant, inclusive space.
Are acoustic wood panels suitable for a classroom on fire safety?
Reaction to fire is classified under BS EN 13501-1 (Euroclass): untreated timber slat panels typically reach around Class D, while higher classes such as B need a fire-retardant treatment or specific construction, evidenced by a test report. Reaction to fire is not the same as fire resistance. Confirm the class a given classroom requires against the actual product's documentation.