How I assess the ToK Exhibition Commentary

Introduction

May Session schools are currently deep into Theory of Knowledge (ToK) Exhibition time. Students are busy writing their commentaries, whilst teachers are occupied with assessing these commentaries. Some teachers have sought support and advice on evaluating the ToK exhibition, so I decided to share my approach to assessing the ToK Exhibition.

This blog post can also be watched as a video at this link, and below

Understanding Global Impression Marking

According to the International Baccalaureate (IB), Global Impression Marking should be used to assess the ToK Exhibition and Essay. But what exactly is Global Impression Marking? The ToK Subject Guide from the IB describes it as “a process of holistic or global judgement rather than an analytical process of totalling the assessment of separate criteria. The assessment instruments present five described levels of performance. These levels are to be seen as global and holistic descriptors rather than as a checklist of necessary characteristics. When marking, the aim is to find the descriptor that conveys most accurately the level attained by the student. It is not necessary for every single aspect of a level descriptor to be met for a mark in that level to be awarded.”

For more detailed information, you can refer to the ToK Subject Guide from the IB.

The Four-Part Structure for ToK Exhibition Commentary

The May 2023 ToK Subject Report outlines a four-part structure for the Exhibition commentary, which I find very useful. These sections are:

1. Identification of the object and its real-world context

2. Explanation of the link between the object and the prompt

3. Justification for the contribution of the object to the exhibition

4. Supporting evidence and references to the prompt

When assessing each object, I consider these four criteria, although I do not give them equal weighting. Generally, I believe that Criteria A-C are more important than D. If a student has adequately addressed A-C, they have likely covered D as well. Criterion C is particularly crucial because justification is necessary for awarding 5-10 marks. As a rough rule of thumb, I allocate approximately 25% of the marks to Criteria A and B, 40% to Criterion C, and 10% to Criterion D. However, I do not write down this weighting; I keep it as a nominal guide in my mind.

Assessing the Commentary

As I read through each commentary, I look for content that can be awarded marks under each of the four criteria. I might keep a rough scorecard for each object, though I do not average these scores. Instead, I use them as a guide to find the descriptor that best fits the commentary according to the marking bands. After applying the four-part structure, I place each object on the assessment rubric and try to find the midpoint between the descriptors to determine an overall marking band.

According to the IB’s instructions for placement within the band:

• Upper mark: Awarded if the student’s work demonstrates the qualities described in that level to a great extent, and may be close to achieving marks in the level above.

• Lower mark: Awarded if the student’s work demonstrates the qualities described to a lesser extent, and may be close to achieving marks in the level below.

Tips to Avoid Moderation Reductions

1. Consistency is Key: Consistency in assessment is almost as important as accuracy. Internal moderation of the commentaries is crucial. This process should involve all ToK teachers who taught the exhibition and, if possible, other ToK teachers who did not teach the exhibition to provide impartial assessments.

2. Teacher’s Comments: Every ToK Subject Report emphasises the importance of the teacher’s comments. They should not be mere cut-and-paste extracts from the assessment instrument but should use the language from it. I use the four-part structure for comments and combine these categories with the qualitative descriptors from the assessment instrument. Crafting detailed comments takes time (around 30-45 minutes per student), but it is worth it to avoid moderation of marks.

Conclusion

Assessing the ToK Exhibition is not rocket science; it is a meticulous process that requires attention to detail and consistency. I hope this guide has been useful for those less experienced in assessing the exhibition. If you have any more requests for content from ToKToday, please get in touch with me at Daniel@TokToday.com.

Stay toktastic, my friends!