| Science papers | Three separate 80-mark papers, averaged into one Science score | One 80-mark Science paper |
| Paper length | Physics and Chemistry 2 h; Maths 2.5 h | Science and Maths 3 h |
| Reading time | 15 minutes before every paper | 15 minutes before every paper |
| Choice | Whole-question choice in Section B — pick 4 of 6, or 4 of 7 in Maths | Internal choice inside questions, about a third |
| Physics topics not in the other | Machines, Calorimetry, Radioactivity, Sound in depth, moments | — |
| Chemistry topics not in the other | Electrolysis, Metallurgy processes, Analytical Chemistry, Study of Compounds, Mole Concept as a board chapter | — |
| Maths topics not in the other | Matrices, Loci, GST, Banking, Shares, GP, Reflection | Real Numbers and Polynomials as separate units |
| Answer style | Longer descriptive answers, explicit reasoning, equations with conditions | Point-wise and keyword-driven, more MCQ and case-study |
| Practical marks | 20 per science subject, real laboratory work | 5 of the 20 internal marks |