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IB Computer Science IA

The most detailed and accurate AI coursework grader. Trained by real IB Examiners.

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How it Works

The Computer Science IA is assessed using five criteria totaling 30 marks.

Criterion A: Problem specification (4 marks)
Mark BandWhat it meansEvidence you must show
3–4The response:describes the problem scenario in terms of its measurable solution requirements; states appropriate success criteria; explains the choice of computational context for the solution.
1–2The response:outlines a problem scenario; states limited success criteria; outlines the nature of the solution in a computational context.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
3–4The response:constructs a reasonable decomposition of the problem scenario; constructs a plan that addresses the success criteria of the solution.
1–2The response:constructs a partial decomposition of the problem scenario; constructs a plan that addresses some of the success criteria of the solution.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
5–6The response:constructs a complete system model; constructs algorithms for the components of the system model that enable the product to perform; describes a testing strategy that aligns with the success criteria.
3–4The response:constructs a system model that is not complete; constructs algorithms for the components of the system model that lead to partial functionality of the product; outlines a testing strategy that aligns with at least three success criteria.
1–2The response:outlines a limited system model; identifies algorithms for the components of the system model; identifies a testing strategy for at least one success criterion.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
10–12The response:constructs a fully functional product; constructs a product that uses appropriate techniques to implement the algorithms; evaluates the choices made to implement the algorithms; justifies the effectiveness of the testing strategy.
7–9The response:constructs a product that has partial functionality; constructs a product that uses some appropriate techniques to implement the algorithms; explains the choices made to implement the algorithms; describes the effectiveness of the testing strategy.
4–6The response:constructs a product that has limited functionality; constructs a product using at least one appropriate technique to implement the algorithms; outlines the choices made to implement the algorithms; states the effectiveness of the testing strategy.
1–3The response:constructs a product with very limited functionality; constructs a product using no appropriate techniques to implement the algorithms; states the choices made to implement the algorithms; states the testing strategy used.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
3–4The response:evaluates the extent to which the success criteria were met; justifies improvements to the product.
1–2The response:states the extent to which the success criteria were met; describes improvements to the product.
0The response does not reach a standard described by the descriptors below.

Avoid Common Mistakes in Computer Science IAs

Providing superficial evaluations that do not thoroughly assess the extent to which success criteria were met, missing opportunities for meaningful improvements.

Neglecting to break down the problem into manageable components, resulting in an incomplete or ineffective plan.

Not adequately testing the product against the success criteria, leading to an inability to demonstrate that the product works as intended.

Failing to document choices made during development, making it hard to evaluate the effectiveness of the implemented algorithms.

Creating a system model that lacks detail or does not align with the problem specification, making it difficult to understand the product's functionality.

Real Grade 7 Computer Science Exemplars

Examiner Marking

Quiz Database Management System

IA
Computer Science
SL
7
Examiner Marking

Stock and Billing System Computational Solution

IA
Computer Science
SL
7

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IA

Math AA

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English A (Lang & Lit) HL Essay

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How it Works

The Computer Science IA is assessed using five criteria totaling 30 marks.

Criterion A: Problem specification (4 marks)
Mark BandWhat it meansEvidence you must show
3–4The response:describes the problem scenario in terms of its measurable solution requirements; states appropriate success criteria; explains the choice of computational context for the solution.
1–2The response:outlines a problem scenario; states limited success criteria; outlines the nature of the solution in a computational context.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
3–4The response:constructs a reasonable decomposition of the problem scenario; constructs a plan that addresses the success criteria of the solution.
1–2The response:constructs a partial decomposition of the problem scenario; constructs a plan that addresses some of the success criteria of the solution.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
5–6The response:constructs a complete system model; constructs algorithms for the components of the system model that enable the product to perform; describes a testing strategy that aligns with the success criteria.
3–4The response:constructs a system model that is not complete; constructs algorithms for the components of the system model that lead to partial functionality of the product; outlines a testing strategy that aligns with at least three success criteria.
1–2The response:outlines a limited system model; identifies algorithms for the components of the system model; identifies a testing strategy for at least one success criterion.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
10–12The response:constructs a fully functional product; constructs a product that uses appropriate techniques to implement the algorithms; evaluates the choices made to implement the algorithms; justifies the effectiveness of the testing strategy.
7–9The response:constructs a product that has partial functionality; constructs a product that uses some appropriate techniques to implement the algorithms; explains the choices made to implement the algorithms; describes the effectiveness of the testing strategy.
4–6The response:constructs a product that has limited functionality; constructs a product using at least one appropriate technique to implement the algorithms; outlines the choices made to implement the algorithms; states the effectiveness of the testing strategy.
1–3The response:constructs a product with very limited functionality; constructs a product using no appropriate techniques to implement the algorithms; states the choices made to implement the algorithms; states the testing strategy used.
0The response does not reach a standard described by the descriptors below.
Mark BandWhat it meansEvidence you must show
3–4The response:evaluates the extent to which the success criteria were met; justifies improvements to the product.
1–2The response:states the extent to which the success criteria were met; describes improvements to the product.
0The response does not reach a standard described by the descriptors below.

Avoid Common Mistakes in Computer Science IAs

Providing superficial evaluations that do not thoroughly assess the extent to which success criteria were met, missing opportunities for meaningful improvements.

Neglecting to break down the problem into manageable components, resulting in an incomplete or ineffective plan.

Not adequately testing the product against the success criteria, leading to an inability to demonstrate that the product works as intended.

Failing to document choices made during development, making it hard to evaluate the effectiveness of the implemented algorithms.

Creating a system model that lacks detail or does not align with the problem specification, making it difficult to understand the product's functionality.

Real Grade 7 Computer Science Exemplars

Examiner Marking

Quiz Database Management System

IA
Computer Science
SL
7
Examiner Marking

Stock and Billing System Computational Solution

IA
Computer Science
SL
7

Explore AI Grader for other subjects

IA

Math AA

Math AI

English A (Lang & Lit) HL Essay

EE

English A (Lang & Lit)

English A (Lit)

English B

TOK

TOK Exhibitions

TOK Essays

Frequently Asked Questions

The Coursework Grader gives you instant feedback on your IB coursework (IA, EE, or TOK). It is designed as a detailed grader trained with input from real IB examiners.

Choose your coursework type and details (subject, level, and session where relevant), upload your PDF, then submit for grading. Once processing starts, you will see a progress screen while your Coursework Grader report is generated.

Yes. Your file stays private and secure on Clastify. It is not shared or published, and uploading it will not trigger plagiarism checkers.

The Coursework Grader assesses your coursework against official IB criteria for the selected subject and category (IA, EE, or TOK). You receive criterion-by-criterion feedback, a predicted mark, and concrete suggestions for improvement.

The model is trained on examiner-marked IB exemplars and aligned with current assessment criteria. It is a strong draft-stage tool, but a human examiner review remains the best option for a final-grade prediction.