Trinity College Dublin has climbed into the world’s top 100 universities, according to the latest global rankings, while most other Irish colleges have slipped down the league table.
The 2023 QS world rankings compare the performance of the world’s top 1,400 universities across 100 countries.
The latest edition shows Trinity is up three positions to 98th, breaking a five-year run outside the top 100.
The college’s improvement was due to a rise in citations — a measure of academic impact — as well as a strong performance in academic and employer reputation surveys.
Most other universities in Ireland, however, have lost ground. University College Dublin (UCD) is down eight places to 181st, Queen's University Belfast is down 17 places to 233rd while NUI Galway is down 12 places to 270th.
There is also disappointment for University College Cork (UCC), which is out of the top 300 after slipping five places to 303rd place.
Dublin City University (DCU) bucked the trend and is Ireland’s most improved university, climbing 19 places to 471st place.
Ulster University also came up the rankings, moving into the 601-650 category (up from 651-700 last year).
However, University of Limerick has dropped into the 531-540 category (down from 501-510 last year), as is Maynooth University, which is into the 801-1,000 category (down from 751-800 last year). Technological University Dublin remains in the 801-1,000 category.
The QS rankings use six indicators: academic and employer reputation; citations per faculty; faculty/student ratio; international faculty ratio; and international student ratio.
Massachusetts Institute of Technology ranks number one globally, while University of Cambridge is in second place and Stanford University remains in third.
Trinity’s provost Linda Doyle said the university is delighted to be back in the top 100 and it was “great news for Ireland’s global reputation”.
“Rankings have shortcomings in how they measure all that is happening in a university, but they are watched closely internationally. It is hugely important for Trinity and for Ireland that we are in the top-100,” Dr Doyle said.
“Further Government funding to tackle our staff-student ratio is key to ensuring we remain in the top 100.”
Trinity's dean of research Dr Wolfgang Schmitt said the ranking was due to an improvement in the ‘citations per faculty’ metric.
“This is a clear recognition of the world-leading research that happens in our schools and faculties on a daily basis. If we continue to commit to the principles articulated in our Research Charter, I am confident that we can improve further,” he said.