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How does IA grading work in IB?

Wojtek

By Wojtek

15 Aug 2025

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Curious about how Internal Assessments are marked? You’re in the right place! In this post, we’ll walk you through the process step-by-step so you’ll know exactly what happens with your work. 

 

 

How does IA grading work in IB?

 

 

After you submit your final version of your IA, it goes through two stages of marking:

 

 

Stage 1: Internal marking

 

  • Your subject teacher marks the IA using the official IB rubric for that subject. 

     

  • The rubric is divided into specific criteria (e.g., personal engagement, analysis, evaluation, communication). 

     

  • Each criterion has descriptors for different mark bands. Teachers must award marks based strictly on these descriptors.

     

  • This ensures that the marking is done in a fair, equal, and unbiased manner. 

 

 

Stage 2: Moderation

 

  • A sample of IAs from your class is then sent to the IB. The sample will include low-, medium-, and high-scoring IAs to illustrate how the teacher has assessed work across different performance levels.

     

  • A highly-qualified IB moderator will re-mark those samples. 

     

  • If your teacher’s marks match the moderator’s, all marks will stay the same. If your teacher’s marks are too high or low, all student marks in that subject at your school will be adjusted accordingly.

 

 

What to do if my IA grade is lower than expected?

 

If there is a large discrepancy between the grades awarded by your teacher and the scores you received after moderation, or if you feel that your work has been marked unfairly, you may submit an Enquiry Upon Results (EUR) through the school’s IB Coordinator. In the EUR, you may request a re-moderation of the IAs (Category 3 EUR). 

 

For this to be approved, the average of the candidates’ moderated IA marks must differ significantly from the teacher-awarded marks, with a difference of at least 15% of the total marks for the subject’s IA component. Since a Category 3 EUR requires all works to be sent for re-marking, consent from other students is required. All students involved will also have to pay a fee.  

 

Unlike other EUR remark procedures, a Category 3 remark cannot result in a lowering of grades – grades may only stay the same or improve. However, students should note that the remark process may take up to 40 days, before the results will be communicated to the school’s IB Coordinator.

 

 

 

We hope you found this post helpful. For more useful materials associated with the IB check out the wide variety of IA, EE and TOK exemplars available at Clastify and other guides available on our blog.