Yes, if you're pursuing the IB diploma, you will need to complete an Internal Assessment (IA) for every subject you take. IAs are a core component of the IB curriculum, designed to evaluate your understanding, skills, and application of knowledge in each subject. Unlike final exams, which test your knowledge under timed conditions, IAs allow for more in-depth exploration and continuous assessment throughout the course. Each IA is tailored to the specific subject, focusing on different skills and areas of knowledge relevant to that discipline. They can range from scientific experiments and mathematical explorations to historical investigations and creative performances. The purpose of the IA is to develop critical thinking, research abilities, and subject-specific skills that are essential for both academic and professional success.
The IA’s contribution to your final grade is significant. For Standard Level (SL) courses, the IA typically counts for 20-30% of your overall score. This percentage is similar for Higher Level (HL) courses, although the complexity and expectations are greater. Given this substantial weight, performing well in your IA can greatly influence your final grade, potentially offsetting weaker exam performance and showcasing your strengths in a specific area. Now, let’s dive into how the IA differs across various subjects, including Chemistry, History, Business Management, Physics, Mathematics, and Drama.
Chemistry
In Chemistry, the IA typically involves conducting a scientific investigation. This can range from exploring reaction rates to studying the properties of chemical compounds. You will need to design and carry out an experiment, collect and analyze data, and draw conclusions based on your findings. The emphasis is on your ability to apply scientific methods and principles. The written report is usually around 6-12 pages, including sections like introduction, methodology, results, discussion, and conclusion.
History
The History IA involves conducting an in-depth investigation into a historical topic of your choice. This could be an event, individual, or movement. You’ll need to formulate a research question, gather and analyze primary and secondary sources, and present a well-argued interpretation of the historical issue. The final report is generally about 2,200 words and includes an introduction, a body of analysis, and a conclusion.
Business Management
In Business Management, the IA requires you to investigate a real-world business issue or decision-making process within an organization. You’ll collect primary and secondary data, analyze the business issue using relevant business theories and tools, and provide recommendations based on your analysis. The report should be around 1,500 words, including sections like introduction, methodology, analysis, conclusion, and recommendations.

