📚 What the Six Categories of the Best Student Cities Ranking Measure | 最佳留学城市排名的六个类别分别衡量什么
Every year, rankings of the best student cities summarise an enormous amount of information about dozens of cities into a single ordered list. That simplicity is useful for applicants, but it hides the real question: what is actually being measured? The QS Best Student Cities ranking, the best-known example of this genre, publishes six categories - Rankings, Student Mix, Desirability, Employer Activity, Affordability and Student Voice - and each one answers a different question about a city. Understanding what each category captures, and what it ignores, turns the ranking from a league table into a decision-making tool.
每年发布的最佳留学城市排名，都会把几十座城市的庞杂信息压缩成一张排名表。这种简洁对申请者很有用，却也掩盖了真正关键的问题：这些名次到底在衡量什么？以最知名的 QS 最佳留学城市排名为例，它公布六个类别——大学排名、学生构成、城市吸引力、雇主活动、可负担性和学生之声——每一个类别回答的其实是关于一座城市的不同问题。理解每个类别在衡量什么、又忽略了什么，才能把排名从一张榜单变成真正的决策工具。
1. What the Ranking Is For | 这个排名想解决什么问题
A city ranking exists because most applicants do not choose a university in isolation - they choose a place to live for three or four years. Two universities with similar reputations can offer completely different experiences depending on rent, safety, transport, part-time work opportunities and the size of the international community. The six categories were designed to spread the decision across all of those dimensions rather than concentrating only on academic reputation.
城市排名之所以存在，是因为绝大多数申请者并不是孤立地选一所大学，而是选择未来三四年要生活的地方。两所声誉相近的大学，可能因为房租、安全、交通、兼职机会和国际学生社群规模的不同，带来完全不同的体验。六个类别的设计初衷，就是把决策依据分散到这些维度上，而不是只盯着学术声誉。
It is also worth noting that these rankings are produced by an organisation that also publishes university rankings and sells services to universities. That does not make the data wrong, but it does mean you should treat the methodology as something to read, not something to trust blindly.
同时也要注意，这类排名的发布机构往往也发布大学排名，并向大学提供商业服务。这并不意味着数据是错的，但意味着方法论文档应该是你必读的材料，而不是可以被盲目信任的结论。
2. The Six Categories at a Glance | 六大类别一览
The six categories are not six versions of the same thing. Each one uses different data sources and answers a distinct question.
这六个类别并不是同一件事的六个版本。它们使用不同的数据来源，回答的也是不同的问题。
| Category 类别 | What it measures 衡量什么 | Typical data source 常见数据来源 |
| Rankings 大学排名 | The number and standing of internationally ranked universities in the city 城市中上榜大学的数量与位次 | QS World University Rankings |
| Student Mix 学生构成 | How large and how diverse the student population is, including international share 学生群体的规模与多元程度，含国际学生比例 | Institutional data, social inclusion indices |
| Desirability 城市吸引力 | Quality of life, safety, pollution, corruption, and how appealing students find the city 生活质量、安全、污染、腐败程度与学生的向往度 | Numbeo, Transparency International, student surveys |
| Employer Activity 雇主活动 | How employers value graduates from the city and how strong the local graduate job market is 雇主对当地毕业生的评价与本地就业市场强度 | Employer reputation surveys, employment data |
| Affordability 可负担性 | Tuition fees and the cost of living students actually face 学费与学生实际面临的生活成本 | Tuition data, cost-of-living indices |
| Student Voice 学生之声 | What current international students say about studying there 在读国际学生对当地学习的真实评价 | International student surveys |
Notice that only one of the six categories - Rankings - is about academic reputation. The other five are about the conditions surrounding your studies.
请注意，六个类别中真正涉及学术声誉的只有"大学排名"一个。其余五个关注的，都是围绕你学习生活的外部条件。
3. Rankings: The Concentration of Strong Universities | 大学排名：名校密度
The Rankings category asks how many internationally recognised universities a city contains and how high they sit in global university tables. It is fundamentally a measure of concentration. A city with five universities inside the global top 200 will almost always score higher than a city with one outstanding institution, even if that single institution is the stronger of them all.
"大学排名"这一类别衡量的是：一座城市里有多少所国际公认的大学，以及它们在全球大学榜单上的位置。它本质上衡量的是"名校密度"。拥有五所全球前 200 名大学的城市，得分通常高于只有一所顶尖大学的城市——即便那所唯一的名校其实更强。
This has two practical implications for applicants.
对申请者来说，这有两点实际含义。
First, a high score can mean breadth rather than excellence. If you already know exactly which university you want, the city score matters less than that university's own position.
第一，高分可能代表"广"而不是"精"。如果你已经明确知道自己想读哪一所大学，那么这所大学自身的排名比城市得分更重要。
Second, a lower-ranked city may still contain a top department in your subject. City-level scores are averaged across disciplines and cannot capture subject-specific strength.
第二，排名较低的城市里，也可能有在你所选专业上极其强势的院系。城市层面的分数是跨学科平均的结果，无法体现具体专业的强弱。
The widely used abbreviation QS stands for Quacquarelli Symonds, the company that compiles the ranking - worth knowing when you read citations in Chinese-language media.
常见的缩写 QS 指 Quacquarelli Symonds，即编制该排名的机构名称。在阅读中文媒体的引用时，知道这一点会很有帮助。
4. Student Mix: Who Studies There | 学生构成：谁在这里读书
Student Mix measures the composition of the student body rather than its quality. Typical sub-indicators include the number of students in the city as a proportion of the total population, the proportion of those students who are international, and measures of social inclusion or tolerance in the wider city.
"学生构成"衡量的是学生群体的组成结构，而不是质量。常见的子指标包括：学生人数占城市总人口的比例、学生中国际学生的比例，以及更广泛意义上的社会包容度或宽容度指标。
Why does this matter? Because it predicts your day-to-day experience more accurately than almost any other category.
为什么这很重要？因为它在预测你的日常体验方面，比几乎任何其他类别都更准确。
A city where students make up a large share of the population tends to have student pricing on transport, nightlife and housing, and a public rhythm built around the academic calendar.
学生占人口比例高的城市，往往在交通、夜间娱乐和住房上有学生优惠，整个城市的节奏也围绕学年展开。
A city with a high international student share is more likely to have administrative systems, English-language services and social networks designed for people arriving from abroad.
国际学生比例高的城市，更可能具备为海外来客设计的行政流程、英语服务和社交网络。
If you are choosing between a large, diverse metropolis and a smaller, more homogeneous city, Student Mix is the category that speaks most directly to that trade-off.
如果你正在"多元的大都市"和"相对单一的小城市"之间犹豫，学生构成就是最直接回应这一权衡的类别。
5. Desirability: Would You Want to Live There? | 城市吸引力：你愿不愿意住在那里
Desirability combines objective quality-of-life data with the subjective views of prospective students. Objective components typically include pollution levels, crime and safety indicators, and perceived levels of corruption. Subjective components come from surveys asking students whether they would like to study in a given city.
"城市吸引力"把客观的生活质量数据与潜在学生的主观看法结合起来。客观部分通常包括污染水平、犯罪与安全指标，以及公众感知的腐败程度；主观部分则来自问卷调查，询问学生是否愿意去某座城市留学。
This category is the one most likely to be misunderstood, because "desirable" does not mean "comfortable for you in particular".
这个类别最容易被误读，因为"有吸引力"并不等于"对你个人而言舒适"。
A city can score well on desirability because of its global reputation, even if you would find it crowded, expensive and impersonal.
一座城市可能因为全球知名度而在吸引力上得分很高，但你个人可能觉得它拥挤、昂贵而且人情淡薄。
Safety and pollution indicators are averaged across the whole city, not the specific district where your campus sits.
安全和污染指标是全城平均值，并不反映你校区所在的具体区域。
Read Desirability as a rough signal about living conditions, then verify it against neighbourhood-level information for the campus you are actually considering.
把"城市吸引力"当成生活条件的大致信号即可，然后针对你真正考虑的校区，用街区层面的信息去核实。
6. Employer Activity: Will It Help You Get Hired? | 雇主活动：能不能帮你找到工作
Employer Activity measures how favourably employers regard graduates of the city's universities, and how healthy the local graduate labour market is. The dominant input is a large international survey in which employers are asked to identify the institutions they consider to produce the best graduates. Some editions also incorporate employment indicators such as youth employment rates or the density of graduate employers in the city.
"雇主活动"衡量的是雇主对这座城市高校毕业生的认可程度，以及本地毕业生就业市场的健康程度。最主要的输入是一项大型国际调查，请雇主指出他们认为最能培养出优秀毕业生的院校。某些年份的版本还会纳入青年就业率、城市中招聘毕业生企业的密度等就业指标。
Two cautions are worth keeping in mind.
这里有两点值得留意。
Employer reputation is measured globally but applied locally. A university may be famous to employers worldwide while the city around it offers few entry-level roles in your field.
雇主声誉是全球测量的，却落到了城市层面。一所大学可能在全世界雇主中都很知名，但它所在的城市在你所学领域里却几乎没有入门级岗位。
For students planning to return home after graduation, the label of the university usually matters more than the reputation of the city's job market.
对于打算毕业后回国的学生来说，大学的品牌通常比当地就业市场的声誉更重要。
Employer Activity is therefore most relevant if you intend to work in the host country or region after graduating.
因此，"雇主活动"这一类别，对计划毕业后留在当地或本区域工作的学生最具参考价值。
7. Affordability: Can You Actually Pay for It? | 可负担性：你真的负担得起吗
Affordability combines the two costs that determine your budget: tuition fees and living expenses. Tuition data is usually gathered at institutional level and averaged for the city, distinguishing where possible between domestic and international rates. Living costs are typically drawn from cost-of-living databases covering rent, groceries, transport and utilities.
"可负担性"把决定你预算的两项成本结合起来：学费和生活开支。学费数据通常在院校层面收集，再按城市取平均，并在可能的情况下区分本地生与国际生费率。生活成本数据通常来自覆盖房租、食品、交通和水电的成本数据库。
This category rewards cities where the total cost of attendance is low relative to what you receive. That produces some counter-intuitive results.
这一类别奖励的是"总花费相对于所获回报较低"的城市，因此常出现一些反直觉的结果。
Low tuition does not guarantee affordability. A city with free tuition but very high rent can score worse than one with moderate fees and cheap housing.
学费低并不保证可负担。免学费但房租极高的城市，得分可能低于学费适中但住房便宜的城市。
Index scores hide currency effects. If your family earns in one currency and you pay in another, exchange-rate movement can change your real budget more than any ranking position.
指数分数会掩盖汇率因素。如果你的家庭以某种货币收入、却以另一种货币支出，汇率波动对你真实预算的影响可能超过任何排名变化。
Use Affordability as a screening filter rather than a ranking criterion. Decide your maximum annual budget first, then treat the score as supporting evidence.
建议把"可负担性"当作筛选门槛而不是排序标准。先确定你能承受的年度预算上限，再把这项得分当作辅助证据。
8. Student Voice: What Students Themselves Say | 学生之声：在读学生怎么说
Student Voice is built from surveys of current international students, who are asked about their overall satisfaction with the city, whether they would recommend it, and whether they intend to stay after graduation. It is the only category that is entirely subjective, and the only one that captures the experience of people who have actually done what you are considering.
"学生之声"来自对在读国际学生的问卷调查，询问他们对这座城市的总体满意度、是否愿意推荐，以及是否打算毕业后留下。这是唯一一个完全主观的类别，也是唯一捕捉"已经做过你正在考虑之事的人"的真实体验的类别。
Its value and its weakness are the same thing: it reflects lived experience, and lived experience is not representative.
它的价值和弱点其实是同一件事：它反映真实体验，而真实体验并不具备代表性。
Survey respondents self-select. Students who are unhappy are less likely to complete a satisfaction survey than students who are enthusiastic.
受访者是自我选择的。不满意的学生填写满意度问卷的概率，低于热情高涨的学生。
Answers are shaped by the respondent's own expectations, subject, budget and language ability - none of which match yours exactly.
答案会被受访者自己的预期、专业、预算和语言能力所塑造，而这些没有一项与你的情况完全一致。
Even so, Student Voice is often the most useful category for the questions that other categories cannot answer: Is it easy to make friends? Is the bureaucracy manageable? Do students feel safe at night?
即便如此，对于其他类别无法回答的问题——容易交到朋友吗？行政手续是否应付得来？学生夜里是否感到安全？——"学生之声"往往是最有用的类别。
9. How the Six Categories Are Weighted | 六个类别如何加权
The six categories are combined into a single city score. In its simplest form the calculation looks like this:
六个类别会被合成为一个城市总分。其最简单的形式可以写成这样：
Mix + w₃ × Desirability + w₄ × Employer Activity + w₅ × Affordability + w₆ × Student Voice
Each wₙ is a weight, and the weights sum to one:
其中每个 wₙ 是一个权重，且所有权重之和为 1：
w₁ + w₂ + w₃ + w₄ + w₅ + w₆ = 1
The critical point for applicants is that the weights themselves are a choice, not a fact. Several editions of the ranking have derived these weights from surveys of prospective international students, asking what matters most to them. Other editions have used different weighting schemes, and the sub-indicators inside each category have also changed over time.
对申请者来说，关键在于：权重本身就是一种人为选择，而非客观事实。该排名有若干版本是根据对潜在国际学生的调查来确定权重的，即询问他们最看重什么；也有版本采用了不同的加权方案。此外，每个类别内部的子指标也随时间发生过变化。
Never compare total scores across different editions of the ranking. Only the current year's scores are internally consistent.
不要跨年份比较总分。只有当年版本内部的分数才是可比的。
If you disagree with the weights, you can build your own score. Take the six category scores, apply your own weights, and re-order the cities yourself.
如果你不认同官方权重，完全可以自建评分：取六个类别的分数，套用你自己的权重，重新排序。
A student whose family is funding everything and who plans to stay abroad would rationally weight Affordability and Employer Activity far more heavily than the published scheme does.
一个由家庭全额资助、并计划留在国外工作的学生，理性上应当给予"可负担性"和"雇主活动"远高于官方方案的权重。
10. What the Six Categories Do Not Measure | 六个类别衡量不了什么
A ranking can only measure what it can collect data on. Several matters that matter enormously to individual applicants fall outside all six categories.
排名只能衡量它能够收集到数据的部分。有几件对个人申请者极其重要的事，落在六个类别之外。
Subject strength 专业实力: a city-level score cannot tell you whether the specific department you want is excellent or mediocre.
专业实力：城市层面的分数无法告诉你，你想申请的具体院系是优秀还是平庸。
Admission reality 录取现实: a highly ranked city you cannot get into is not a real option.
录取现实：再高排名，如果录不上，就不是真正的选项。
Language environment 语言环境: a city can be diverse and still have almost no English-language everyday life outside campus.
语言环境：一座城市可以很多元，但校园之外的日常生活仍可能几乎用不上英语。
Visa and post-study work rules 签证与毕业工作政策: these are set nationally and are not part of the six categories, yet they often decide whether a city is worth choosing.
签证与毕业后工作政策：这些由国家层面决定，不在六个类别之内，却常常决定一座城市是否值得选。
Personal fit 个人契合度: climate, food, distance from family, religious and cultural community - none of it is captured.
个人契合度：气候、饮食、与家人的距离、宗教与文化社群，全都没有被纳入。
Treat the six categories as a description of the city, not a prescription for you.
请把六个类别理解为对城市的描述，而不是对你的处方。
11. Using the Six Categories to Build a Shortlist | 如何用六个类别筛选选校清单
The most practical use of the six categories is not to rank cities but to eliminate them. A shortlist built category by category is usually better than one built from the overall table.
六个类别最实用的用法不是给城市排名，而是排除城市。逐类别搭建清单，通常优于直接照抄总榜。
Step 1 - Affordability as a filter 第一步：用可负担性做筛选. Set a maximum annual cost and remove every city above it.
第一步：用可负担性做筛选。 设定年度花费上限，删掉所有超出的城市。
Step 2 - Rankings within your subject 第二步：看专业内的排名. Check subject-level tables, not only institutional ones.
第二步：看专业内的排名。 查学科榜单，而不只是学校总榜。
Step 3 - Student Mix for lifestyle 第三步：用学生构成判断生活方式. Decide how much international community and student infrastructure you want.
第三步：用学生构成判断生活方式。 想清楚你需要多大规模的国际社群和学生配套。
Step 4 - Employer Activity against your plan 第四步：用雇主活动对照你的规划. Weight it heavily only if you intend to work locally after graduation.
第四步：用雇主活动对照你的规划。 只有打算毕业后留在当地工作时，才给它高权重。
Step 5 - Student Voice for the last questions 第五步：用学生之声回答最后的问题. Read the open comments, not just the score.
第五步：用学生之声回答最后的问题。 读开放性评论，而不只是看分数。
After this process, you will usually be left with three to six cities, which is a workable number for campus visits, application planning and honest conversations with your family about money.
走完这一流程后，你通常只会剩下三到六座城市，这正是便于实地考察、规划申请、以及和家人坦诚讨论费用的数量级。
12. Quick Reference and Common Misreadings | 快速查阅与常见误读
The table below summarises the six categories as questions you can ask directly.
下表把六个类别改写成你可以直接自问的问题。
| Category 类别 | Question it answers 它回答的问题 | Common misreading 常见误读 |
| Rankings 大学排名 | Are there strong universities here? 这里有名校吗？ | Treating city score as subject strength 把城市分数当成专业实力 |
| Student Mix 学生构成 | Who will my classmates and neighbours be? 我的同学和邻居会是谁？ | Assuming diversity means English everywhere 以为多元就等于处处英语 |
| Desirability 城市吸引力 | Is this a good place to live? 这里适合生活吗？ | Confusing global fame with personal comfort 把全球名气当成个人舒适度 |
| Employer Activity 雇主活动 | Will local employers value my degree? 当地雇主认可我的学位吗？ | Ignoring
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