The 2027 QS Best Student Cities ranking, published on Tuesday by British consultancy Quacquarelli Symonds, places Seoul, Tokyo and London in the top three positions for another year, yet the index reveals that soaring housing costs and living expenses are systematically undercutting the attractiveness of many leading university hubs. Madrid climbed one place to 29th and Barcelona slipped three to 32nd, while Hong Kong held steady at 17th and Buenos Aires, the top Latin American city, fell three spots to 35th. QS assesses 150 cities on criteria including university strength, employer activity, student mix and affordability, and the latest data show that even cities with strong academic reputations are being penalised by the cost of accommodation.

Viewed from Madrid, the ranking confirms a paradox. QS notes that Spanish campuses are well placed to attract international students as other destinations tighten policies, but “the main limitation is the cost of living and, above all, housing, the critical point at the centre of Spain’s own international strategy.” Madrid scores just 25.5 out of 100 for affordability, ranking 112th out of 150, on a par with Copenhagen or Milan; Barcelona, at 29.6, sits alongside Dubai or Stockholm. Julián Garde, president of the Spanish rectors’ conference, separately highlighted that high-achieving students are being shut out of public universities because of a shortage of places, a pressure that compounds the housing squeeze. In Switzerland, Zurich fell one place to 10th and Lausanne dropped to joint 23rd. QS spokesperson Viggo Stacey described the results as “very good” given the global emergence of new institutions, but the decline in attractiveness underscores the competitive challenge.

In Latin America, Buenos Aires retains a commanding lead over regional rivals, ranking 15th globally for university strength and outpacing Santiago de Chile by 20 positions. Yet QS vice-president Ben Sowter warned that the city’s traditional model of open access and low cost is “under pressure.” The report notes that the average international tuition fee at ranked institutions in Buenos Aires is around US$6,400 per year, and the city fell eight places in the affordability indicator to 87th. Sowter said the challenge is to “protect what made the system attractive” as public universities gain the right to charge non-resident international students, a shift QS describes as moving from a model of universal right to one that is “institutional and potentially revenue-generating.”

Hong Kong’s case illustrates a distinct affordability burden. The city ranks sixth for university strength but 86th for affordability, with average international tuition fees of about US$18,900 per year—the highest in East Asia and more than double Tokyo’s figure. QS also flags a persistent shortage of student accommodation and limited international diversity as key challenges. Across the ranking, the affordability crisis is reshaping the global map: while European and North American cities grapple with housing costs, Asian destinations such as Seoul and Tokyo consolidate their top positions, in part because their cost structures remain comparatively manageable. The ranking offers no immediate policy prescriptions, but the data make clear that for many cities, the battle for international students will be won or lost on the question of where they can afford to live.