Internal Assessments: A Complete Guide for IB Students (2026)

Internal Assessments, commonly known as IAs, are one of the most important — and often most misunderstood — parts of the IB Diploma Programme (IBDP). Many students focus heavily on final exams, but what they don’t realize is that internal assessments can significantly improve or damage an IB score.

If you’re searching for:

  • what is an internal assessment in IB

  • how important is IA in IB

  • how is internal assessment graded

  • can IA improve IB score

then this guide is written for you.

At IB Demystified, we support IB students worldwide through one-to-one online IA tutoring, feedback services, and examiner-style guidance, helping students turn their IA into a scoring advantage rather than a source of stress.

What Is an Internal Assessment in IB?

international assessment

An internal assessment is a piece of coursework completed by IB students during the academic year and assessed internally by the school, then moderated externally by IB examiners.

Unlike final exams, IAs allow students to:

  • Explore topics in depth

  • Apply concepts creatively

  • Demonstrate independent thinking

  • Showcase research and communication skills

Every IB subject includes an IA, though the format, length, and weighting differ by subject.

Why Internal Assessments Matter More Than You Think

One of the most common misconceptions is that IAs are “just coursework.” In reality, internal assessments often carry 20%–30% of the final subject grade.

Why IAs Are Crucial:

  • They are completed over time (less exam pressure)

  • They reward consistency and clarity

  • They can compensate for exam stress

  • They reflect real academic skills, not memorization

For many students, a strong IA can be the difference between a 5 and a 6 — or a 6 and a 7.

How Important Is IA in IB?

The importance of an IA depends on the subject, but in every case, it is significant.

Typical IA Weighting in IB Subjects

Internal Assessments

This means ignoring your IA is a serious risk.

Mathematics Internal Assessment Explained

The mathematics internal assessment is an individual exploration where students investigate a topic of personal interest using mathematical concepts.

Key expectations include:

  • Clear research question

  • Correct mathematical reasoning

  • Logical structure

  • Reflection and communication

Many students lose marks not because the maths is wrong, but because:

  • The exploration lacks focus

  • Explanations are unclear

  • Criteria are misunderstood

This is where expert IA feedback makes a huge difference.

IB Internal Assessment Guide: Step-by-Step Process

ibdemystified

1. Topic Selection

Choosing the right topic is critical. A good IA topic is:

  • Personally interesting

  • Mathematically appropriate

  • Clearly focused

  • Aligned with IB criteria

2. Planning and Structure

Strong IAs follow a logical structure:

  • Introduction and rationale

  • Methodology

  • Mathematical analysis

  • Reflection and conclusion

3. Drafting

Students must balance depth with clarity. Overcomplicating often reduces marks.

4. Feedback and Improvement

Professional IA feedback service helps identify gaps before submission.

IB Assessment Criteria: What Examiners Actually Look For

Each IA is graded using official IB assessment criteria, which typically include:

  • Mathematical knowledge and understanding

  • Mathematical communication

  • Personal engagement

  • Reflection

  • Use of mathematics

Understanding these criteria is more important than writing long pages.

At IB Demystified, we train students to write for the criteria, not just for content.

Internal Assessment vs External Assessment in IB

Many students ask about the difference between internal assessment vs external assessment.

Key Differences

External Assessment

Both matter, but IAs give students more control over their grades.

How Is Internal Assessment Graded?

IAs are:

  1. Marked by school teachers

  2. Moderated by IB examiners

This means:

  • Criteria accuracy matters

  • Clear justification matters

  • Presentation and explanation matter

Even small mistakes can lead to lost marks if criteria are not met.

Can IA Improve IB Score?

Yes — absolutely.

A strong IA can:

  • Offset weaker exam performance

  • Push a student into the next grade boundary

  • Reduce pressure in final exams

This is why IB IA tutoring is one of the smartest academic investments a student can make.

Internal Assessment Examples: Why They Matter

Looking at internal assessment examples helps students:

  • Understand expectations

  • Learn structure

  • Avoid common mistakes

However, copying examples is dangerous. Instead, students should learn patterns, not replicate content.

IB Internal Assessment Tutor Online: Why Guidance Matters

Many students struggle because:

  • Teachers have limited time

  • Feedback is general

  • Deadlines approach quickly

An IB internal assessment tutor online provides:

  • Personalized guidance

  • Examiner-style feedback

  • Clear improvement strategies

At IB Demystified, our tutors work one-to-one on Zoom, supporting students ethically and effectively.

IB IA Tutoring and Support Services at IB Demystified

We provide comprehensive IB internal assessment help worldwide, including:

IA Tutoring

  • Topic selection support

  • Structure guidance

  • Criteria-focused improvement

IA Feedback Service

  • Detailed written feedback

  • Examiner-style comments

  • Clear next steps

IA Proofreading (IB-Safe)

  • Language clarity

  • Academic tone

  • Structure and flow

Internal Assessment Examiner Feedback

  • Based on official IB criteria

  • Ethical and compliant

Internal Assessment Online Course and Revision Support

For students needing structured help, we offer:

  • Internal assessment online courses

  • IA revision support

  • Deadline-based planning

This is ideal for students balancing multiple subjects.

World of Education Services: Why IA Support Is Global

IB is an international curriculum. Students across:

  • Europe

  • USA

  • Asia

  • Middle East

Face similar IA challenges. IB Demystified supports students globally through online tutoring and feedback services.

Common IA Mistakes Students Make

  • Choosing overly complex topics

  • Ignoring criteria

  • Writing too descriptively

  • Weak reflection

  • Poor structure

Most of these issues are easy to fix with expert guidance.

Why IB Demystified Is Trusted for IA Support

At IB Demystified, we focus on:

Our goal is not just to improve one assignment, but to teach students how to score better across IB.

Faqs

What is an internal assessment in IB?

An IA is coursework assessed internally and moderated by IB.

Typically 20–30% depending on the subject.

Yes, a strong IA can significantly boost final grades.

Using official IB criteria and external moderation.

IA requires different skills — research, structure, and reflection.

Yes, IB Demystified offers one-to-one online IA tutoring worldwide.

Yes, ethical proofreading and feedback are allowed under IB rules.