Key Stage 4 computing · Digital media

GCSE digital media skills: a guide for parents

In Years 10 and 11, the National Curriculum asks schools to give every pupil the chance to build their capability, creativity and knowledge in digital media alongside computer science and information technology. In practice that means making things, such as posters, edited photos, short videos, audio and web pages, and being able to explain why each choice suited the audience and the purpose.

Digital media skills, explained

The statutory wording for Key Stage 4 is short and broad. Pupils should develop their capability, creativity and knowledge in computer science, digital media and information technology, and must have the chance to study these areas in enough depth to go on to higher levels of study or a professional career. The aim is for them to become responsible, competent, confident and creative users of technology. Schools decide how to deliver this: some offer a GCSE in computer science, some a separate creative or digital qualification, and some build projects into other lessons. It is worth asking which route your child’s school uses.

Digital media work usually starts with a brief rather than a tool. Your child is told who the product is for, what it needs to achieve and any limits, such as a poster for a school careers evening that must work in print and on a screen. They plan first, then gather or create assets: photos, drawings, recordings, text and video clips. Teachers care about the reasoning as much as the result, so expect your child to write or talk about why they chose a layout, a colour scheme or a type of file.

A lot of the technical knowledge is about how media is stored. A photo is a grid of pixels, so a small image stretched to fill a large print looks blurry. Resolution, colour depth and file size are all linked. Compression makes files smaller: lossy formats throw away detail the eye is unlikely to miss, while lossless formats keep every pixel. Sound and video have their own measures, such as sample rate for audio and frame rate for video. Choosing the right format for the job is a skill that is often assessed in practical work.

Good design is also taught explicitly. Children learn to think about hierarchy (what the viewer should notice first), alignment, contrast, readable text and consistency, and to test their work on real people before finishing it. Responsible use is part of the picture too. Anything your child finds online is usually someone else’s work, so they learn about copyright, permission, crediting sources and using material that its owner has licensed for reuse. Most of this can be practised at home with the equipment you already have, with no special software required.

Words your child will hear

Pixel: One tiny square of colour. A digital image is a grid of them.
Resolution: How much detail an image holds, usually the number of pixels across and down, or pixels per inch for print.
Lossy and lossless compression: Lossy makes a file smaller by permanently discarding some detail. Lossless makes it smaller without losing any.
Vector graphic: An image made from shapes and lines described by numbers, so it can be enlarged without going blurry.
Frame rate: The number of still pictures shown each second in a video.
Target audience: The group of people a piece of media is made for.
Licence: Permission from the owner, set out as terms, saying how their work may be used, for example whether it must be credited.

What the National Curriculum says

The programme of study for Key Stage 4 says:

All pupils should be taught to develop their capability, creativity and knowledge in computer science, digital media and information technology
All pupils must have the opportunity to study aspects of information technology and computer science at sufficient depth to allow them to progress to higher levels of study or to a professional career.
Aim: pupils are responsible, competent, confident and creative users of information and communication technology.

Objectives from the National Curriculum in England, © Crown copyright, used under the Open Government Licence v3.0.

Try it: preparing a poster so it works in print and on screen

Your child is making an A4 poster for the school careers evening. It needs a photo of the school hall, taken on a phone, that is 6 inches wide and 4 inches tall when printed. The poster will also be posted on the school website. How should they prepare the photo and save the files?

Start with purpose and audience. Parents and pupils will glance at the poster from a distance, so the event name and date need to be the largest text, with the photo supporting it rather than competing with it.
Work out how many pixels the printed photo needs. Print usually needs about 300 pixels for every inch. Across: 6 inches × 300 = 1,800 pixels. Down: 4 inches × 300 = 1,200 pixels.
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6 in × 300 = 1,800 pixels wide
4 in × 300 = 1,200 pixels tall
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Check what the phone photo actually holds. If it is 4,000 × 3,000 pixels, it has more than enough detail. Phone photos are usually 4:3, so crop it to a 3:2 shape (the same shape as 6 × 4), which leaves about 4,000 × 2,667 pixels, then reduce it to 1,800 × 1,200 without any visible loss of print quality.
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6 ÷ 4 = 1.5, so the shape is 3:2
4,000 ÷ 1.5 ≈ 2,667 pixels tall
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Choose file types for each use. The print version goes to the school office as a PDF, so the text stays sharp. The website version can be a much smaller image saved as a JPEG, which suits photographs because lossy compression shrinks them well. The school logo is best kept as a PNG or vector file, so its edges stay clean.
Check the credits. The photo is your child’s own, but a decorative border they downloaded is not. They either use one whose licence allows reuse and note where it came from, or draw their own.
Test it on someone. Show the poster to a friend for five seconds, then ask what they remember. If they cannot say what the event is or when it is, change the hierarchy and try again.

Crop the photo to 3:2 at about 1,800 × 1,200 pixels for print, export a PDF for the printer and a smaller JPEG for the website, keep the logo as PNG or vector, credit or replace any borrowed artwork, and make the event name and date the most prominent text.

Common mistakes and how to help

“A bigger file or a bigger image is always better quality”

Children see large numbers and assume more detail. But enlarging a small image only stretches the same pixels, and a huge file slows down a web page for no visible gain.

What helps: Ask what the image will be used for. Print needs a lot of pixels for its size; a website needs far fewer. Let your child compare the same picture saved at two sizes.

“If it is on the internet, I can use it”

Search results show images without showing who owns them, and being easy to copy feels like being free to copy.

What helps: Explain that the creator owns their work automatically. Your child should look for a licence that allows reuse, and always note where an image or sound came from.

Adding lots of effects, fonts and colours to show off skill

New software offers dozens of options, and busy designs look impressive to the person making them.

What helps: Good design is usually restrained. Suggest limiting the project to two fonts and a small set of colours, then asking whether every item earns its place.

Treating the finished product as the end of the work

In a creative project, saving the last file feels like completion. Assessed work also asks for planning and evaluation.

What helps: Ask what feedback they gathered, what they changed because of it, and what they would do differently. Those answers are often the strongest part of the write-up.

How to help at home

Critique everyday design together. Pick a leaflet, a packet or a poster in a shop window and ask what you notice first, who it is for and what could be clearer. Teenagers enjoy having an opinion, and it trains the same judgement used in coursework.
Make something real for the family. A birthday invitation, a short video of a family event or a recording of a relative’s story gives a real audience and a real deadline. Let your child choose the tools and make the decisions.
Compare file formats. Ask your child to save one photo as a few different types and sizes, then look at the file sizes and the picture quality side by side. Seeing the trade-off makes the vocabulary stick.
Talk about copyright and permission. When they use a picture or a track, ask where it came from and whether they are allowed to use it. Making a habit of noting sources now saves problems in assessed work later.
Ask for the reasons, not just a look. Instead of “that looks good”, try “why did you put the title there?” Explaining choices out loud is exactly what teachers want to see in the written part of the project.

Builds on

Key Stage 3: Online identity, privacy and security
Key Stage 3: Spotting and reporting online concerns

Everything in Key Stage 4 computing

Updated 20 October 2026.