Leaving Certificate Biology is the scientific study of life. It helps students understand living systems, from cells and genes to organisms, ecosystems and the interaction between biology, society and technology.
Students develop biological knowledge, but they also learn how biologists think: asking questions, handling evidence, analysing data, and using scientific ideas to explain what happens in the natural world. It is a strong subject for students interested in medicine, health, science, environment, agriculture and biotechnology.
For the syllabus examined up to June 2026, Biology is assessed through a terminal examination paper. The current syllabus document states that practical work is integral to the subject, but the assessment is through the written paper.
From the new specification introduced to fifth-year students in September 2025, the assessment for the first 2027 cohort changes to two components: a Biology in Practice Investigation worth 40% and a written examination worth 60%.
For students following the specification in effect for 2027 onward examination cohorts, the official course is organised as follows:
Current syllabus to June 2026, with the new specification introduced for fifth-year students from September 2025.
Zr Academy offers Biology grinds in Dublin 2 and online for students who want clear topic coverage, investigation support and strong exam technique.
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