The IB Design Technology Internal Assessment (IA)—also known as the design project—often feels mysterious to students. Many work hard on their projects but still lose marks because they misunderstand how IB actually grades the IA. The key to scoring highly is not doing more work, but doing the right work in line with the assessment criteria.

This article explains how the IB grades the Design Technology IA and what examiners are really looking for.

Who Grades the IB Design Technology IA?

The IA is:

• Marked internally by your teacher
• Moderated externally by the IB

This means teachers must follow IB criteria closely, because IB moderators check whether marks are justified. Projects that look impressive but lack evidence or justification are often marked down during moderation.

What the IA Is Really Assessing

The IB Design Technology IA does not assess:

• How complex your product is
• How expensive your materials are
• How good your final prototype looks

Instead, it assesses your ability to:

• Apply design thinking
• Make justified design decisions
• Show development and iteration
• Evaluate success honestly and critically

Every mark comes from evidence of thinking, not appearance.

Key Areas Examiners Focus On

Although the IA is presented as a single project, examiners look for clear performance across several areas.

Identifying a Real Design Problem

Strong projects start with a specific, user-focused problem.

High marks are awarded when:

• The problem is clearly defined
• The user is specific and realistic
• The problem is supported by evidence

Vague problems limit marks from the very beginning.

Research and Justification

Research is graded based on usefulness, not quantity.

High-scoring projects:

• Use research to justify decisions
• Link findings directly to design choices
• Avoid copying large amounts of irrelevant information

Research that does not influence the design earns very few marks.

Design Development and Iteration

This is where many students lose marks.

Examiners expect to see:

• Multiple ideas explored
• Clear reasons for selecting one design
• Changes made after testing

A project with no meaningful iteration suggests weak design thinking, even if the final solution works.

Testing and Evidence

Testing is only valuable if it produces evidence.

High marks come from:

• Purposeful testing linked to requirements
• Feedback from users
• Measurable or observable outcomes

Simply stating that a test was “successful” without evidence limits achievement.

Evaluation

Evaluation is one of the highest-impact sections of the IA.

Strong evaluation:

• Refers directly to original design requirements
• Uses testing results and user feedback
• Acknowledges limitations honestly
• Suggests realistic improvements

Overly positive or vague evaluation often scores poorly.

What Does NOT Increase IA Marks

Students often waste time on:

• Overly detailed manufacturing logs
• Decorative layouts
• Perfect finishes without explanation

These do not significantly affect grades unless they support justification and evaluation.

Common IA Grading Mistakes

Students frequently lose marks by:

• Being descriptive instead of analytical
• Skipping iteration
• Writing evaluation as a summary
• Leaving sections incomplete due to poor time management

Most low marks come from misunderstanding criteria, not lack of effort.

Frequently Asked Questions

Can a simple project score highly?

Yes. A simple project with strong justification, testing, and evaluation often scores higher than a complex project with weak reasoning.

Does word count matter?

Clarity matters more than length. Concise, well-justified explanations score better than long descriptions.

Can teachers help with the IA?

Teachers can guide and give feedback, but all ideas, decisions, and writing must be your own.

Final Advice

The IB Design Technology IA is graded on quality of thinking, not complexity of outcome. Students who understand the criteria early and align every section to them consistently achieve stronger results.

RevisionDojo Tip

RevisionDojo is the best platform for IB Design Technology students who want criterion-focused guidance, clear examples of high-scoring IA sections, and structured support throughout the design project. When you understand how the IA is graded, RevisionDojo helps you turn effort into marks.