📚 IB Economics: Marking Criteria Analysis | IB 经济：评分标准分析
Success in IB Economics depends not only on understanding theories but also on knowing exactly how examiners award marks. This guide breaks down the marking criteria for every external paper and the internal assessment, helping you target high performance across all components.
要在 IB 经济中取得高分，不仅需要理解理论，更要精确掌握考官如何评分。本指南逐一拆解每份外部试卷和内部评估的评分标准，助你有的放矢地冲击高分。
1. Assessment Overview | 评估概述
The IB Economics course (first assessment 2022) uses a combination of external examinations (80% for SL and HL) and internal assessment (20%). Understanding the structure and weightings is the first step to effective exam preparation.
IB 经济课程（2022 年起首次评估）采用外部考试（SL 与 HL 均占 80%）和内部评估（20%）相结合的方式。了解结构与权重是高效备考的第一步。
For SL, Paper 1 (Extended Response) is worth 30%, Paper 2 (Data Response) 40%, and the IA portfolio 20%. HL students sit an additional Paper 3 (Quantitative Paper), with weightings of 20% for Paper 1, 30% for Paper 2, 30% for Paper 3, and 20% for the IA.
对 SL 而言，试卷 1（扩展回答题）占 30%，试卷 2（数据回应题）占 40%，IA 组合占 20%。HL 学生额外参加试卷 3（定量试卷），权重分配为：试卷 1 占 20%，试卷 2 占 30%，试卷 3 占 30%，IA 占 20%。
2. Paper 1 Structure and Markbands | 试卷 1 结构与评分等级
Paper 1 features three extended response questions, each covering a different syllabus area (microeconomics, macroeconomics, and the global economy). Students choose one question and must answer both part (a) [10 marks] and part (b) [15 marks].
试卷 1 包含三道扩展回答题，分别涵盖不同大纲领域（微观经济学、宏观经济学和全球经济）。学生任选一题，须回答 (a) 部分（10 分）和 (b) 部分（15 分）。
Part (a) typically asks for an explanation of a key concept using real-world examples or diagrams. Part (b) demands a more evaluative discussion, often requiring students to assess a policy or compare viewpoints.
(a) 部分通常要求运用现实案例或图表解释关键概念。(b) 部分则要求更具评价性的讨论，往往需要评估某项政策或比较不同观点。
Both parts are assessed using markbands rather than point-by-point markschemes. Examiners look for coherent structure, accurate terminology, appropriate diagrams, and depth of evaluation.
两部分均采用评分等级（markbands）而非按点给分。考官注重答题结构的连贯性、术语的准确性、图表的恰当性以及评价的深度。
3. Decoding Paper 1 Markbands – What Examiners Look For | 解码试卷 1 评分等级——考官关注点
The Paper 1 markbands range from Level 0 (no relevant answer) to Level 5 (comprehensive and perceptive response). The following table summarises the generic criteria for both parts:
试卷 1 的评分等级从 Level 0（无关回答）到 Level 5（全面而具洞察力的答案）。下表概括了适用于两部分的通用标准：
| Level | Descriptor (English) | 描述（中文） |
|---|---|---|
| 0 | The work does not reach a standard described by the descriptors. | 答案未达到描述符所列的标准。 |
| 1–2 | Little understanding; few relevant terms; no effective use of diagrams. | 理解有限；术语使用少；未有效运用图表。 |
| 3–4 | Adequate understanding; some relevant diagrams; limited evaluation. | 理解尚可；有一些相关图表；评价有限。 |
| 5–6 | Good understanding; effective diagrams; balanced evaluation begins to emerge. | 理解良好；图表有效；开始呈现均衡的评价。 |
| 7–8 | Precise understanding; fully labelled diagrams; clear evaluation supported by theory. | 理解精准；图表完整标注；有理论支撑的清晰评价。 |
| 9–10 (Part a) | Perceptive insight; diagrams enhance the argument; relevant real-world examples. | 洞察力强；图表强化论述；切合实际的例子。 |
| 13–15 (Part b) | Outstanding evaluation; critical analysis of assumptions and stakeholder impacts; synthesis. | 评价卓越；对假设和利益相关方影响进行批判分析；综合论述。 |
The top levels reward synthesis, where students connect different parts of the syllabus and demonstrate critical awareness. A diagram alone never earns high marks; it must be explained and applied.
最高评分等级奖励综合能力，即学生能融会贯通不同大纲内容并展现批判意识。单靠图表永远无法获得高分；图表必须被解释和运用。
4. Paper 2 – Data Response Question Format | 试卷 2——数据回应题格式
Paper 2 presents students with real-world data, including graphs, tables, and extracts. SL students answer all questions in the paper; HL students also answer all questions, but the questions may include more challenging evaluation prompts. Total marks: 40 for SL, 40 for HL (but with different weightings).
试卷 2 向学生呈现真实世界数据，包括图表、表格和摘录。SL 学生需回答试卷中的所有题目；HL 学生同样回答全部题目，但可能包含更具挑战性的评价要求。总分：SL 40 分，HL 40 分（但权重不同）。
Each question is split into several parts, testing definitions (2 marks), calculations (2–3 marks), diagrammatic application (4 marks), explanation (4 marks), and evaluation (up to 7 marks in the final part).
每道题拆分为若干小问，考查定义（2 分）、计算（2–3 分）、图表应用（4 分）、解释（4 分）以及评价（最后一问可达 7 分）。
5. Paper 2 Mark Allocation and Command Terms | 试卷 2 分数分配与指令词
Understanding command terms is crucial for Paper 2. 'Define' requires a precise, textbook definition; 'Calculate' expects a correct numerical answer with working shown; 'Draw' or 'Label' needs an accurate diagram.
理解指令词对试卷 2 至关重要。“Define” 要求给出精确的教材定义；“Calculate” 需要展示计算过程并得出正确数值；“Draw” 或 “Label” 需要绘制准确的图表。
'Explain' (4 marks) should link theory to the data and include a diagram where relevant. Examiners allocate 2 marks for a clear explanation and 2 marks for effective use of the stimulus material.
“Explain”（4 分）应将理论与数据联系起来，并在适当处包含图表。考官将 2 分分配给清晰的解释，另 2 分分配给对给定材料的有效运用。
The final evaluation question, often worth 7 marks, uses markbands similar to Paper 1. Students must weigh both sides, consider stakeholder perspectives, and draw a reasoned conclusion. References to the provided data are mandatory.
最后一道评价题通常占 7 分，采用与试卷 1 类似的评分等级。学生必须权衡正反两面，考虑利益相关者的视角，并得出有理有据的结论。必须引用所提供的数据。
6. Paper 3 (HL Only) – Quantitative Paper Demystified | 试卷 3（仅 HL）——定量试卷揭秘
Paper 3 is a 1-hour 45-minute paper for HL students, focusing on quantitative methods and policy analysis. It comprises two compulsory questions, each built around a real-world scenario. Total marks: 50.
试卷 3 是 HL 学生专属的 1 小时 45 分钟考试，聚焦定量方法与政策分析。包含两道必答题，每道题均基于真实情境。总分 50 分。
Questions test calculations such as elasticities (PED, YED, XED, PES), total revenue, costs, profit, and indices. You must show all working steps clearly.
题目测试弹性（PED、YED、XED、PES）、总收入、成本、利润以及指数等计算。你必须清晰展示所有解题步骤。
Mark schemes for calculation parts give full credit only for correct answers with units. If you use an incorrect formula but show logical steps, partial credit may be awarded. Label all axes and curves on diagrams.
计算部分的评分方案只在答案正确且带单位时给予满分。如果使用了错误公式但展示出逻辑步骤，可能获得部分分数。图表须标注所有坐标轴和曲线。
The longer written parts, often 15 or 20 marks, require you to recommend a policy based on quantitative evidence. High-scoring responses integrate numerical results, diagrams, and stakeholder analysis to justify the recommendation.
较长的书面部分（通常 15 或 20 分）要求你基于定量证据推荐政策。高分答案会结合数值结果、图表与利益相关者分析来论证推荐意见。
7. Internal Assessment Commentaries – The Framework | 内部评估评论——框架
The IA portfolio consists of three commentaries, each based on a different real-world article (maximum 14 marks per commentary). Each commentary must use a different section of the syllabus (micro, macro, global).
IA 组合由三篇评论构成，每篇基于不同的真实世界文章（每篇最高 14 分）。每篇评论必须运用不同的大纲板块（微观、宏观、全球）。
The assessment criteria are identical for SL and HL: A – Diagrams (3 marks), B – Terminology (2 marks), C – Application (2 marks), D – Analysis (3 marks), and E – Evaluation (4 marks).
SL 和 HL 的评估标准完全相同：A – 图表（3 分），B – 术语（2 分），C – 应用（2 分），D – 分析（3 分），E – 评价（4 分）。
Each commentary must not exceed 800 words. The title page, diagrams, labels, and bibliography are not included in the word count, but in-text citations are. Meeting the word limit while fully satisfying all criteria is a skill in itself.
每篇评论不得超过 800 词。标题页、图表、标注和参考书目不计入词数，但文内引用计入。在满足所有标准的同时控制词数本身就是一项技能。
8. IA Criteria A & B: Diagrams and Terminology | IA 标准 A 与 B：图表与术语
Criterion A (Diagrams, 3 marks) requires at least one relevant diagram per commentary that is correctly labelled, titled, and integrated into the analysis. A standalone diagram without explanation earns only 1 mark.
标准 A（图表，3 分）要求每篇评论至少包含一个相关图表，图表须正确标注、有标题并融入分析。未作解释的孤立图表仅能得 1 分。
To achieve 3 marks, the diagram must be used to illustrate a specific economic relationship from the article and must be accompanied by a precise written explanation of its relevance.
要获得 3 分，图表必须用于阐释文章中的特定经济关系，并伴有准确的文字解释说明其相关性。
Criterion B (Terminology, 2 marks) rewards the accurate and consistent use of subject-specific terms throughout the commentary. Avoid defining a term and then never using it again; weave key terms naturally into your analysis.
标准 B（术语，2 分）奖励全文准确且一致地使用学科术语。避免定义后就再不使用某个术语；将关键词自然融入分析之中。
9. IA Criteria C & D: Application and Analysis | IA 标准 C 与 D：应用与分析
Criterion C (Application, 2 marks) measures how well you connect economic theory to the article's content. Direct quotes or specific data from the article are essential to earn full marks.
标准 C（应用，2 分）衡量你将经济理论与文章内容联系的能力。直接引用文章原文或具体数据是获得满分的关键。
Criterion D (Analysis, 3 marks) assesses your ability to explain economic relationships. Go beyond description – unpack chains of reasoning, explain causal links, and show how diagrammatic shifts correspond to real-world changes described in the article.
标准 D（分析，3 分）评估你解释经济关系的能力。超越描述层面——拆解推理链条，解释因果关系，并展示图表变化如何对应文章中描述的现实变化。
Examiners look for internal consistency: if your diagram shows a leftward shift of demand, your written analysis must justify why that shift occurs using evidence from the article and theoretical logic.
考官看重内在一致性：若你的图表显示需求向左移动，你的文字分析必须利用文章证据和理论逻辑证明为何发生此移动。
10. IA Criterion E: Evaluation – The Highest-Weighted Skill | IA 标准 E：评价——权重最高的技能
Criterion E (Evaluation, 4 marks) is the most heavily weighted IA criterion. Students must make a reasoned judgment about the economic issue, considering pros and cons, short-run versus long-run effects, and impacts on various stakeholders.
标准 E（评价，4 分）是 IA 中权重最高的标准。学生须对经济问题做出有理据的判断，权衡利弊、兼顾短期与长期效应以及对各利益相关方的影响。
Top-level evaluation acknowledges assumptions and limitations of the theory used. For example, when applying demand and supply to a sugar tax, you might discuss the assumption of rational consumer behaviour or the possibility of cross-border shopping.
高水平的评价会承认所用理论的假设和局限。例如，在运用供需分析糖税时，你可以讨论理性消费者行为假设或跨境购物的可能性。
Your conclusion must be clear and directly answer the commentary's key question. Avoid merely summarising; instead, prioritise the most crucial factor and justify why it outweighs others.
结论必须明确，直接回答评论的核心问题。避免仅作总结；而应突出最关键的因素，并论证其为何比其他因素更重要。
11. Overall Weightings and Grade Boundaries | 整体权重与等级界限
Final IB Economics grades are determined by totalling weighted scores from all components. Grade boundaries vary slightly each session, but understanding them helps set realistic targets.
IB 经济最终成绩由所有组成部分的加权分数合计得出。等级界限每考季略有不同，但了解它们有助于设定切实可行的目标。
For HL, a typical total scaled mark of around 75–85% often equates to a Grade 7, while for SL a slightly higher percentage is usually required due to the absence of Paper 3. Always check your school's predicted boundaries from recent exams.
对 HL 而言，总调节分约 75–85% 往往对应 7 分等级；而 SL 因无试卷 3，通常需要稍高的百分比。随时向学校了解近期考试提供的预估界限。
Excel in the IA (often high-scoring with consistent effort) to build a strong foundation, then work on exam technique to secure the highest bands in Papers 1, 2, and 3.
在 IA 上表现优异（持续努力往往能获高分）以建立坚实基础，然后打磨应试技巧，确保在试卷 1、2、3 中取得最高等级。
12. Proven Strategies to Maximise Your Economics Marks | 提升经济分数的有效策略
Always use the command term as your checklist. If the question says 'evaluate', your response must contain a balanced judgement; merely explaining cannot reach the top markband.
始终把指令词当作核对清单。如果题目要求 “evaluate”，你的回答必须包含均衡的判断；仅仅解释无法达到最高评分等级。
For data response and quantitative papers, annotate the given data before writing. Calculate everything twice and keep explanations anchored to the stimulus. Avoid generic theory dumps.
对于数据回应和定量试卷，动笔前先对给定数据进行标注。所有计算重复一遍，并将解释始终紧扣素材。避免泛泛地堆砌理论。
Practise drawing diagrams quickly and accurately under timed conditions. A well-labelled diagram can lift a mid-level response to a higher markband instantly. Ensure every line and intersection has a label.
在限时条件下练习快速、准确地绘制图表。一个标注得当的图表能瞬间将中等水平答案提升到更高评分等级。确保每条线和每个交点都有标注。
Finally, expose yourself to examiner-style mark schemes and example responses. Notice how the highest-scoring scripts combine precise terminology, relevant real-world examples, and reflective evaluation. Replicate that style consistently.
最后，多接触考官风格的评分方案和范例答案。观察最高分答卷如何融合精准术语、切合实际的例子与反思性评价，并持续模仿这种风格。
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