📚 CIE AS & A Level Computer Science 2026: Exam Changes & Trends | 2026年剑桥国际AS与A Level计算机科学考试变化与趋势
The Cambridge International AS and A Level Computer Science qualification (9618) is set to undergo a significant refresh for examinations from 2026. While the core structure retains familiar papers, new emphasis on artificial intelligence, cybersecurity, and enhanced practical problem‑solving will reshape the way students prepare. This article unpacks the key syllabus adjustments, shifting assessment objectives, and emerging trends to help Year 12 learners stay ahead of the curve.
剑桥国际AS与A Level计算机科学课程（代码9618）将在2026年考试中迎来重大更新。虽然基本考卷结构得以保留，但对人工智能、网络安全以及深化实践问题解决能力的全新强调将重塑备考方式。本文逐一解析关键的大纲调整、评估目标变化与最新趋势，帮助12年级学生抢先一步做好准备。
1. Overview of the 2026 Syllabus Update | 2026年大纲更新概览
The updated 9618 syllabus for 2026–2028 moves away from a purely theory‑driven model towards a strand‑based framework that interweaves computational thinking, programming fundamentals, and real‑world system design. AS Level still covers Papers 1 and 2, but the content weighting within each topic has been rebalanced to give greater prominence to algorithms, abstraction, and code comprehension.
2026至2028年适用的新版9618大纲从纯理论驱动模式转向以线索为基础的框架，将计算思维、程序设计基础和现实系统设计交织在一起。AS阶段仍然考查试卷一与试卷二，但各主题的内部权重经过重新平衡，更加突出算法、抽象思维和代码理解能力。
A notable structural change is the introduction of ‘Computing Principles’ as an explicit thread running through all units. This means that even in the hardware or data representation topics, students must explain how principles apply to modern contexts such as cloud computing or mobile processors. For Year 12 learners, this signals a need to connect isolated facts into broader conceptual maps.
一个明显的结构性变化是“计算原理”作为一条明确线索贯穿所有单元。这意味着即便在处理硬件或数据表示等主题时，学生也需解释相关原理如何应用于云计算、移动处理器等现代场景。对12年级学生而言，这提示他们必须将孤立的知识点串成更宏观的概念图。
2. Shift in Assessment Objectives | 评估目标的变化
The revised assessment objectives place heavier demands on application and evaluation. The table below compares the existing AO weightings (up to 2025) with the new ones effective from 2026 for AS Level. The shift is clear: rote recall loses ground to analysis and creative problem‑solving.
修订后的评估目标对应用与评价能力提出了更高要求。下表对比了AS阶段现有评估权重（截至2025年）与2026年起生效的新权重。变化显而易见：死记硬背的比重下降，分析能力和创造性问题解决能力的重要性上升。
| Assessment Objective | Pre‑2026 AS Weight | 2026 AS Weight |
|---|---|---|
| AO1 Knowledge with understanding | ~40% | ~30% |
| AO2 Application | ~40% | ~45% |
| AO3 Analysis and evaluation | ~20% | ~25% |
Consequently, exam questions will include more scenario‑based prompts requiring students to justify design choices, compare algorithms, and critique given solutions. For Year 12, this means that simply memorising truth tables or sorting steps is no longer sufficient; candidates must explain why a particular approach is efficient or secure.
相应地，考试题目将包含更多基于场景的设问，要求学生论证设计选择、比较算法并点评所给的解决方案。对12年级学生而言，这意味着一味背诵真值表或排序步骤已不足够；考生必须能够说明为什么某种方法是高效或安全的。
3. Paper 1 Theory Fundamentals: Emphasis on Computational Thinking | 试卷一理论基础：强调计算思维
Paper 1 (Theory Fundamentals) remains a 1‑hour‑30‑minute written paper carrying 75 marks. However, the 2026 edition revises the distribution of marks across its traditional domains. The section on data representation and computer architecture will incorporate more questions on the environmental impact of hardware and the role of abstraction in managing complexity.
试卷一（理论基础）仍为时长1小时30分钟、满分75分的笔试，但2026年版调整了传统考查领域的分数分布。数据表示和计算机体系结构部分将纳入更多关于硬件对环境的影响以及抽象在管理复杂性中作用的问题。
Questions on logic gates and Boolean algebra are now expected to be contextualised within small problem‑solving tasks rather than isolated simplification exercises. For example, a stem might describe a lift control system and ask candidates to derive a Boolean expression that ensures the lift only moves when doors are closed and the target floor differs from the current floor. This pushes learners to apply theoretical knowledge with precision.
逻辑门与布尔代数相关的题目预计将嵌入小型问题解决任务，而非孤立的化简练习。例如，题干可能描述一个电梯控制系统，要求考生推导一个布尔表达式，确保电梯仅在门已关闭且目标楼层与当前楼层不同时才运行。这促使学习者精准地应用理论知识。
4. Paper 2 Fundamental Problem‑solving and Programming: New Requirements | 试卷二问题解决与编程：新要求
Paper 2 introduces a mandatory on‑screen programming component that must be completed using an approved integrated development environment (IDE) under timed conditions. Previously, pseudocode answers dominated; now, candidates will write, test, and debug real code for a series of structured tasks. The available languages are Python 3.12+, Java 21+, and Visual Basic.NET.
试卷二引入了必须在规定时间内通过指定集成开发环境（IDE）完成的机考编程任务。以往以伪代码回答为主；今后，考生将针对一系列结构化任务编写、测试并调试真实代码。可选语言为Python 3.12及以上、Java 21及以上和Visual Basic.NET。
The new Paper 2 allocates 50% of its marks to algorithm design and trace table completion, while the remaining 50% assesses the correctness, efficiency, and style of the written code. Marks are awarded for using meaningful variable names, appropriate comments, and modular structure—so clean coding habits become examinable skills. Year 12 students should practise timed coding with a focus on file handling, exception handling, and object‑oriented features where the chosen language supports them.
新版试卷二50%的分数分配给算法设计和跟踪表填写，其余50%评估所写代码的正确性、效率与风格。使用有意义的变量名、恰当注释和模块化结构都能得分——因此良好的编码习惯成为可考查的技能。12年级学生应进行限时编程练习，着重练习文件处理、异常处理以及所选语言支持的面向对象特性。
5. Paper 3 Advanced Theory (A2): Emerging Topics | 试卷三高级理论（A2）：新兴主题
While Year 12 learners focus on AS, understanding the A2 trajectory helps plan a two‑year journey. Paper 3 now includes a dedicated section on machine learning fundamentals, covering supervised vs unsupervised learning, bias‑variance trade‑off, and simple linear regression. No complex mathematics is required; the emphasis is on conceptual understanding and interpretation of output.
虽然12年级学生集中精力于AS阶段，但了解A2的发展方向有助于规划两年学习路径。试卷三如今包含一个专门的机器学习基础章节，涵盖监督学习与无监督学习、偏差‑方差权衡以及简单线性回归。不要求复杂数学，重点是概念理解与结果解释。
Additionally, the new syllabus integrates quantum computing concepts at an elementary level, asking students to compare classical and quantum bits and to discuss potential impact areas such as cryptography. These topics will appear in the AS Paper 1 to a lesser extent, ensuring foundational awareness from the first year of study.
此外，新大纲融入了初级水平的量子计算概念，要求学生比较经典比特与量子比特并讨论密码学等潜在影响领域。这些主题也将在AS试卷一中轻度出现，确保从第一学年起就建立基础认知。
6. Paper 4 Practical (A2): Increased Project Weighting | 试卷四实践（A2）：项目权重增加
For A2 candidates, the practical project (Paper 4) sees its total available marks rise from 75 to 100, with a stronger emphasis on analysis, documentation, and evaluation. The project must now demonstrate integration of at least two external data sources or APIs, and the written report must include a formal usability testing log. While AS students do not submit a project, their early programming tasks in Paper 2 simulate the iterative development lifecycle that undergirds the A2 project, so Year 12 practice directly feeds into later success.
对于A2考生，实践项目（试卷四）的总分从75分提高到100分，更加强调分析、文档和评价。项目如今必须展示集成至少两个外部数据源或应用程序接口（API），书面报告必须包含正式的可用性测试日志。尽管AS学生不需要提交项目，但其试卷二中的早期编程任务模拟了支撑A2项目的迭代开发生命周期，因此12年级的练习直接为后续成功奠定基础。
7. Artificial Intelligence and Machine Learning Integration | 人工智能与机器学习的融入
AI is no longer optional. The 2026 syllabus embeds AI literacy across all papers. At AS, students must be able to describe the Turing Test, differentiate between narrow and general AI, and explain how training data bias can affect outcomes. A typical exam question might provide a dataset and ask the candidate to identify potential sources of bias and suggest mitigation strategies.
人工智能不再是选修内容。2026年大纲将AI素养嵌入所有试卷。在AS阶段，学生必须能够描述图灵测试，区分弱人工智能与通用人工智能，并解释训练数据偏差会如何影响结果。典型考题可能提供一个数据集，要求考生识别潜在的偏差来源并提出缓解策略。
Programming tasks in Paper 2 may now involve implementing a simple k‑nearest neighbours classifier or a decision tree stub, reinforcing the idea that AI is not just theory but a practical toolkit. Year 12 learners should become comfortable with libraries like scikit‑learn (Python) at a basic level to gain hands‑on confidence.
试卷二中的编程任务如今可能要求实现一个简单的k‑近邻分类器或决策树代码片段，强化了AI不仅是理论更是实践工具的理念。12年级学生应初步熟悉像scikit‑learn（Python）这类库，以获得动手操作的信心。
8. Cybersecurity and Ethics | 网络安全与伦理
Cybersecurity content has been expanded from a subsection to a full‑fledged topic spanning ethical hacking principles, biometric authentication, and the legal implications of data breaches. The syllabus requires AS candidates to compare symmetric and asymmetric encryption using real‑world protocols such as TLS 1.3, and to evaluate the effectiveness of multi‑factor authentication in different contexts.
网络安全内容从一个小节扩展为一个完整专题，涵盖道德黑客原则、生物特征认证以及数据泄露的法律后果。大纲要求AS考生使用TLS 1.3等现实协议比较对称加密与非对称加密，并评估多因素认证在不同场景下的有效性。
Ethical discussions are now assessed through structured long‑answer questions. For instance, a scenario about a school using facial recognition for attendance could prompt analysis of privacy, consent, and surveillance trade‑offs. Year 12 students should practise writing balanced arguments that reference the ACM Code of Ethics and data protection regulations like GDPR.
伦理讨论现在通过结构化长答题进行评估。例如，关于学校使用人脸识别考勤的场景可能要求分析隐私、同意和监控之间的权衡。12年级学生应练习撰写平衡的论述，援引美国计算机协会伦理守则与GDPR等数据保护法规。
9. Changes to Programming Language Requirements | 编程语言要求的变化
Cambridge has reaffirmed that all code examples in mark schemes will be given in Python, making it the de facto lingua franca of the syllabus. While Java and VB.NET remain permitted, centres using alternative languages must ensure full coverage of syllabus features such as recursion, record structures, and linked memory. Year 12 centres are strongly advised to adopt Python 3.12 or later to align with the new programming environment specifications.
剑桥大学国际考评部已确认评分标准中的所有代码示例将使用Python，使之成为事实上的大纲通用语言。尽管Java和VB.NET仍被允许，使用其他语言的中心必须确保完全覆盖递归、记录结构和链接内存等大纲特性。强烈建议12年级教学中心采用Python 3.12或更高版本，以符合新的编程环境规范。
The 2026 syllabus also introduces code readability rubrics: indentation, whitespace, and consistent naming conventions are explicitly assessed. Automated marking components will flag spaghetti code and reward well‑structured solutions. Therefore, Year 12 students should adopt a style guide (e.g., PEP 8 for Python) early in their learning.
2026年大纲还引入了代码可读性评分标准：缩进、空格和一致命名规范都将被明确考查。自动评分组件将标记混乱的代码，并对结构良好的解答给予加分。因此，12年级学生应尽早遵循一种风格指南（如Python的PEP 8）。
10. Exam Format and Timing Adjustments | 考试格式与时间调整
Although paper durations remain unchanged (Paper 1: 1 h 30 min; Paper 2: 2 h), the internal structure has been refined. Paper 1 now opens with a 15‑minute reading‑only period, during which candidates can annotate the question paper but not write in the answer booklet. This encourages deliberate planning and reduces careless errors on high‑stakes calculation questions.
虽然试卷时长保持不变（试卷一：1小时30分钟；试卷二：2小时），但内部结构得到优化。试卷一现在设置了15分钟的纯阅读时间，期间考生可在试卷上标注，但不得在答题册中书写。这有助于进行有意识的规划，减少在高风险评估题上的粗心错误。
Paper 2 moves to a fully digital submission model for programming tasks. Candidates upload their source code and a brief runtime log at the end of the examination. Automatic plagiarism detection will be employed, so originality in algorithm design is paramount. Year 12 learners must regularly back up their practice code and learn to write clean, self‑contained modules that can be verified independently.
试卷二转为编程任务全数字提交模式。考生在考试结束前上传其源代码与简短运行日志。将启用自动抄袭检测，因此算法设计的原创性至关重要。12年级学生须养成定期备份练习代码的习惯，并学会编写清晰、自包含且可独立验证的模块。
11. Preparing for the 2026 Exams: Recommended Strategies | 2026年考试备考策略建议
Given the increased emphasis on application, Year 12 students should adopt an active‑learning approach: explain concepts aloud, teach peers, and continuously link theory to hands‑on coding. Create a personal glossary of key terms with concrete examples—for instance, define 'abstraction' with both a hardware layer diagram and a Python class that hides implementation details.
由于更加注重应用，12年级学生应采取主动学习法：大声讲解概念、与同伴互教，并持续将理论与动手编码联系起来。制作一份附带具体实例的个人术语表——例如，同时用硬件层次图和一个隐藏实现细节的Python类来定义“抽象”。
Regular timed practice using past‑paper style questions revised for the 2026 format is essential. Leverage online IDEs that replicate the exam environment, and complete at least two full‑length Paper 2 mocks under realistic conditions. Keep an error log to identify recurring mistakes in logic, syntax, or time management.
定期进行针对2026年格式修订后的真题风格限时练习至关重要。使用模拟考试环境的在线IDE，并在真实条件下至少完成两份完整的试卷二模拟。建立错题日志，以识别在逻辑、语法或时间管理上反复出现的失误。
Master the official pre‑release material for Paper 2 as soon as it is available; dissect every algorithm and possible extension.
一旦官方发布试卷二预习材料，立即精通其内容；解剖每个算法及其可能的扩展。
Form study groups to debate ethical scenarios and compare solution strategies, as peer discussion sharpens evaluation skills.
组建学习小组，辩论伦理场景并比较解题策略，因为同伴讨论能磨砺评价能力。
Learn to read exam mark schemes actively, identifying what gains credit and how partial marks are awarded for partial explanations.
学会主动阅读考试评分标准，识别哪些内容能得分以及如何为不完整的解释赋予部分分数。
12. Embracing the Trends: A Future‑Ready Mindset | 拥抱趋势：面向未来的思维模式
The 2026 changes reflect a broader vision: Computer Science education must equip learners not just with syntax, but with the analytical agility to solve problems we cannot yet imagine. By integrating AI, security, and ethical reasoning into the core from Year 12, Cambridge aims to cultivate engineers who think critically and code responsibly.
2026年的变革反映了更宏大的愿景：计算机科学教育不仅要赋予学生语法知识，更要培养他们解决我们尚未预见问题的分析敏捷性。从12年级起便将人工智能、安全与伦理推理融入核心，剑桥大学国际考评部旨在培养具备批判性思维和责任编码能力的工程师。
For Year 12 learners starting their AS journey in 2025, embracing these trends early transforms assessment pressure into a genuine intellectual adventure. The skills built—algorithmic thinking, systematic debugging, and ethical evaluation—are precisely those that universities and tech employers will value in 2027 and beyond.
对于2025年开启AS之旅的12年级学生来说，尽早拥抱这些趋势能将评估压力转化为真正的智识探险。在此过程中建立的算法思维、系统调试和伦理评价能力，恰恰是2027年及以后大学与科技雇主所看重的素养。
Published by TutorHao | Computer Science Revision Series | aleveler.com
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