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25% SL / 20% HL of your full IB mark is the Internal Assessment (IA). This is an investigation of independent or collaborative work.
25% SL / 20% HL of your full IB mark is the Internal Assessment (IA). This is an investigation of independent or collaborative work.
Collaboration relating to the research question (RQ) and developing methodology of an investigation is permitted. You may support others in groups of 3 or less, but you are required to develop a unique RQ and methodology with unique data.
Collaboration relating to the research question (RQ) and developing methodology of an investigation is permitted. You may support others in groups of 3 or less, but you are required to develop a unique RQ and methodology with unique data.
May 2026 Exams (SL/HL)
May 2026 Exams (SL/HL)
The internal assessment (IA) task involves the design, implementation and completion of an individual investigation of an environmental systems and societies (ESS) research question. The investigation is submitted as a written report (3 000 words) and MUST follow the IB Sciences experimentation guidelines.
Any investigation to be used for an IA should be specifically designed by the student to address the assessment criteria. An extended essay (EE) must not be based on the student’s research question of the ESS internal assessment.
- Excerpted from the IB ESS Guide 2024
Internal Assessment Criteria: 30 PTS
Internal Assessment Criteria: 30 PTS
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