CEnT-S
Start with the skills.
Build your foundations with 4 short lessons and 36 original questions. Begin with the 8-question starter or choose a focused topic below.
One lesson at a time.
Read an explanation, follow a worked example and check your understanding before choosing a practice set.
- Lesson 1 · About 4 minutes→
Translate compact notation
Use powers, probability and a reduced sample space.
- →
- Lesson 3 · About 4 minutes→
Match mechanisms, quantities and units
Review cell function, energy flow, concentration and work.
- Lesson 4 · About 5 minutes→
Build a repeatable problem-solving method
Separate givens, assumptions and the requested quantity before solving.
Start small. Focus. Then mix it up.
Each set has untimed practice or an optional practice timer, plus an explanation for every answer. Sets can overlap; they use this pathway’s 36 original questions.
Quick start
Two mathematics, two reasoning, two biology, one chemistry and one physics item. Navigation and a single practice timer deliberately differ from the official separate-section rules. No normalised score is calculated.
Open this set →9 questions · Optional 18 minMathematics and logic
Focus on mathematics and logic. Start with the related foundation lesson, then use the explanations to review. This set extends beyond the short lesson.
Open this set →5 questions · Optional 10 minReasoning and data
Focus on reasoning and data. Start with the related foundation lesson, then use the explanations to review. This set extends beyond the short lesson.
Open this set →10 questions · Optional 20 minBiology, chemistry and physics
Focus on biology, chemistry and physics. Start with the related foundation lesson, then use the explanations to review. This set extends beyond the short lesson.
Open this set →24 questions · Optional 48 minMixed practice
The original 24-question mixed set, including the eight-question starter. A broader mix of skills, without the full syllabus or official exam format.
Open this set →6 questions · Optional 12 minSkill builder 1
Six fresh original questions with worked explanations. A short skill set, not a complete exam or official score prediction.
Open this set →6 questions · Optional 12 minSkill builder 2
Six fresh original questions with worked explanations. A short skill set, not a complete exam or official score prediction.
Open this set →12 questions · Optional 24 minProblem-solving recap
Twelve original questions from Skill builders 1 and 2. Revisit the problem-solving method; these are repeated questions, not a fresh full exam.
Open this set →Partial skill practice. The timer is an editorial setting; results are raw correct-answer counts, without official score conversion.
Where this fits.
Applicants to university programmes whose admission calls explicitly accept or require CEnT-S. Acceptance, test mode and deadlines are programme-specific.
CEnT-S contains 55 questions in 110 minutes: Mathematics 15/30 minutes, Reasoning on texts and data 15/30, Biology 10/20, Chemistry 10/20 and Physics 5/10. Sections have separate limits and cannot be revisited after leaving them. Raw marking is +1 correct, −0.25 wrong and 0 blank; CISIA subsequently normalises results.
- Mathematics and reasoning: algebra, geometry, functions, probability/statistics, logic and interpretation of information.
- Biology: molecules, cells, inheritance, plant/ecosystem and animal-system fundamentals.
- Chemistry and physics: matter, reactions, quantities, mechanics, energy, fluids, thermal physics and electromagnetism.
Current CEnT-S rules for 1 November 2025–31 October 2026; later-cycle rules must be checked
CISIA provides CEnT-S simulations through its practice area. Use an official account and check the current access instructions.
Official references
These provider and publisher links explain the exam or underlying concepts. Our lessons and questions are original, independent practice.
View 18 references and checked dates
- CISIA: CEnT-S structure and syllabus (opens in a new tab)Checked 2026-09-20
- CISIA: CEnT rules (opens in a new tab)Checked 2026-09-20
- CISIA: practice simulations (opens in a new tab)Checked 2026-09-20
- Biology 2e: Laws of Inheritance (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- Biology 2e: The Light-Dependent Reactions of Photosynthesis (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- Chemistry 2e: Classifying Chemical Reactions (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- Chemistry 2e: Atomic Structure and Symbolism (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- College Physics 2e: Motion Equations for Constant Acceleration in One Dimension (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- College Physics 2e: The Ideal Gas Law (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- College Algebra 2e: Quadratic Functions (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- College Algebra 2e: Inverse Functions (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- College Algebra 2e: Systems of Linear Equations — Two Variables (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- College Algebra 2e: Counting Principles (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- Introductory Statistics 2e: Measures of the Center of the Data (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- Introductory Statistics 2e: Frequency, Frequency Tables, and Levels of Measurement (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- Prealgebra 2e: Solve Geometry Applications — Circles and Irregular Figures (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- Contemporary Mathematics: Truth Tables for the Conditional and Biconditional (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.
- ABO Blood Group — Medical Genetics Summaries (opens in a new tab)Checked 2026-09-20
Concept and scope reference. Our questions and explanations are original; no provider endorsement.