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About O Level Combined Science
O Level Combined Science 5129 is a Cambridge International qualification, usually taken at the end of Year 11 and designed for students aged 14 to 16. It covers all three sciences in one subject, and Cambridge groups the content itself: twelve biology topics, ten chemistry topics and five physics topics, twenty-seven in total.
Two things about this qualification catch families out. The first is that it produces one grade, not two. Cambridge IGCSE Co-ordinated Sciences is a double award, so it ends in a pair of grades; O Level Combined Science is a single award, and candidates are eligible for grades A* to E. If you are choosing between the two routes, that is the difference to understand.
The second is the practical. On the three separate O Level sciences, candidates take either a hands-on Practical Test or a written Alternative to Practical. O Level Combined Science has neither option: there is a single practical paper, Paper 3 Experimental Skills and Investigations, and every candidate takes it. It is a written paper, and Cambridge states that candidates will not be required to do experiments. Cambridge does provide the notes for use in qualitative analysis, so the paper expects knowledge of how tests work rather than the performance of them. The other papers are the same shape as the separate sciences: Paper 1 is multiple choice and worth 30%, Paper 2 is the theory paper and worth 50%, and Paper 3 carries the remaining 20%. One more thing to plan around is that exams are in the November series, and only centres in Brunei can also enter candidates in June. We work from real past papers, and you can see how our O Level tutoring works.
Who O Level Combined Science Is For
This course suits students taking one qualification across all three sciences instead of three separate O Levels.
- Year 10 and Year 11 students sitting O Level Combined Science 5129 this year
- Students who want grades A* to E and cannot be moved onto an easier tier
- Learners balancing biology, chemistry and physics at once and needing a steady weekly rhythm
- Students who are strong in one science and much weaker in another
- Families who need to plan around the November exam series
Cambridge O Level Combined Science: The Board We Cover
Cambridge International is the only board offering Cambridge O Level Combined Science. We teach 5129 in full, across all three sciences.
Cambridge
Cambridge O Level Combined Science 5129 is untiered. All candidates take three components and are eligible for grades A* to E, with A* the highest and E the lowest. Paper 1 is a multiple-choice paper of 1 hour and 40 marks, carrying 30% of the qualification, with 40 compulsory multiple-choice items. Paper 2 is a theory paper of 1 hour 45 minutes and 80 marks, carrying 50%, using compulsory short-answer and structured questions. Paper 3 is Experimental Skills and Investigations, a 1 hour paper of 40 marks carrying 20%, with all items compulsory, and it is the only practical paper on this syllabus. Cambridge states that candidates will not be required to do experiments as part of it, and that notes for use in qualitative analysis are provided. All three papers are externally assessed, and there is no coursework. Calculators may be used in all parts of the examination, and the syllabus sets about 130 guided learning hours. The subject content is grouped by Cambridge into biology, chemistry and physics. Exams are available in the November series, and centres in Brunei can also enter candidates in the June series. The syllabus is available to centres in administrative zones 3, 4 and 5.
How Centaurus Helps O Level Combined Science Students Excel
Three Sciences, One Timetable
Biology, chemistry and physics all carry weight in a single grade. We keep a steady weekly rhythm across all three instead of revising the easiest one.
Written Practical, Fully Rehearsed
The practical paper is written and no experiments are required. We drill the standard tests, the calculations and the data handling until they are automatic.
One Grade, Whole-Subject Planning
There is no tier and no second grade to cushion a weak paper. We target the grade the student can actually reach and work backwards.
November Series Planning
This is a November-only syllabus, so the whole two-year plan is built around one exam window.
Classes in Your Local Time
Live group sessions scheduled around your time zone, so no late nights or early mornings just to make a class.
24/7 Progress Reporting
Families get access to the Centaurus Academy LMS, with attendance, progress and lesson notes available to parents, students and teachers at any time.
Why Centaurus Stands Out
Choosing the right O Level Combined Science support makes a real difference. Here is how Centaurus Academy compares with typical online providers.
Meet our Team Of Experts
Our expert tutors bring deep subject knowledge and a passion for teaching — helping every student reach their full potential.
What Parents Say About Us
Hear from the parents and students who have experienced our personalised teaching first-hand.
Excellent long-term experience
We have an excellent long-term experience with the academy and Sir Awais. Our three children studied with them during different periods and succeeded well. We highly recommend the academy.
Excellent academy
Centaurus Academy is truly one of the best educational institutions I've come across. The environment is nurturing, the staff are incredibly dedicated, and the quality of education is outstanding. They focus not only on academic excellence but also on character building and personal growth. The teachers are supportive and go the extra mile to ensure every student feels confident and motivated.
My child has gained confidence
I'm very satisfied with the dedication and teaching approach. My child has gained confidence and improved significantly in understanding math concepts, thanks to the teacher's clear explanations and supportive guidance.
Frequently Asked Questions About O Level Combined Science
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