Classroom Whiteboard Size Guide for Teachers and School Buyers

Choosing the right whiteboard size for a South African classroom makes a real difference to visibility, teaching flow and how much time teachers spend erasing mid-lesson. This guide covers standard sizes by grade level, correct mounting heights, magnetic vs non-magnetic options, and how to place a bulk school order with Bestboard, manufacturing school boards in Johannesburg since 1996.

Looking for every standard size rather than classroom sizes specifically? Our complete guide to whiteboard sizes in South Africa lists all 14 standard sizes with current prices.

Before you commit to a size, decide if a fixed wall-mounted board or a portable mobile board suits your classroom layout better. Read our guide on Wall-Mounted vs Mobile Whiteboards for South African classrooms.

Why Whiteboard Size Matters in the Classroom

A board that is too small for the room forces teachers to write smaller, erase more frequently and lose learners at the back of the class. The right size means larger writing visible from every desk, more space for diagrams and activity zones, less interruption to teaching flow, and better use of available wall space. For classes of more than 30 learners, always choose at least 1200mm x 2400mm.

Standard Classroom Whiteboard Sizes in South Africa

Foundation Phase (Grade R to 3)

900mm x 1200mm: the most common size for smaller Foundation Phase classrooms with younger learners sitting closer to the board. Suitable where wall space is limited.

Intermediate Phase (Grade 4 to 7)

1200mm x 1800mm provides more writing room for daily subjects, diagrams and visual work. The preferred size for standard intermediate classrooms across South Africa.

Senior Phase and FET (Grade 8 to 12)

1200mm x 2400mm: the standard size for most South African high school classrooms. Ideal for larger classes and subjects with extensive notes, diagrams and worked examples. For very large lecture-style rooms, the 1200mm x 3000mm is our largest standard classroom board, in stock at R4 150. Non-standard dimensions are manufactured to order, so contact us if your wall needs something else.

The Boards for These Sizes

Correct Board Mounting Height by Grade

The bottom of the main writing area should be mounted at the following heights from the floor:

• Grade R to 3: 650mm to 700mm from floor to the main writing line
• Grade 4 to 7: 750mm to 800mm
• Grade 8 and up: 850mm

Correct mounting height ensures learners at the front are not straining upward and those at the back have an unobstructed sightline to the full writing area.

Whiteboard or Chalkboard for South African Schools?

Both are widely used in South African schools. Whiteboards use dry-erase markers and are easier to clean. They are the preferred choice for new school builds and refurbishments. Chalkboards remain standard in many government schools, particularly where dust is less of a concern. Bestboard manufactures both. View our school boards range which includes magnetic whiteboards, non-magnetic whiteboards and magnetic chalkboards in all standard classroom sizes.

Magnetic vs Non-Magnetic School Boards

Magnetic whiteboards have a steel-backed surface that holds magnets, allowing teachers to attach printed worksheets, maps, charts and teaching aids directly to the board alongside writing, with no blu-tack or tape required. This is the more popular choice for modern South African classrooms. Non-magnetic whiteboards are cheaper and suited to classrooms where magnets are not required.

The gap is worth costing properly. A non-magnetic 1200mm x 2400mm is R2 720 against R3 520 for the magnetic version, a saving of R800 per board. Across a 20-classroom fit-out that is R16 000. Weigh that against how often your teachers actually attach worksheets and charts to the board, because if they do it daily the magnetic surface earns the difference back in blu-tack and frustration alone.

Pre-Order Checklist for Schools

• Measure full wall width and height available
• Note the position of switches, windows and projector screens
• Check sightlines from desks at the back and sides of the room
• Confirm mounting height for the grade group
• Decide between magnetic and non-magnetic surface
• Count the number of classrooms for bulk pricing

Bulk School Orders and Custom Sizes

Bestboard supplies schools, school circuits and government departments with bulk orders of classroom boards at competitive pricing. Custom sizes are manufactured to order. If your classrooms have non-standard wall dimensions, we can manufacture to fit. Fast nationwide delivery direct from our Johannesburg factory, with support for urgent school fit-outs.

Request a school quote by emailing info@bestboard.co.za or contact us here with your room dimensions and number of classrooms.

Or browse all whiteboards for sale in South Africa.