The National University of Singapore's (NUS) business school has climbed four spots in an annual ranking of Master of Business Administration (MBA) programmes, overtaking the Nanyang Technological University (NTU), which slid six places.

The NUS Business School ranked 32nd in this year's Financial Times (FT) Global MBA rankings, doing well especially in categories measuring the global exposure of its students, the school said in a press release on Monday.

Its MBA programme ranked 10th for international mobility, which is based on whether alumni worked in different countries pre-MBA, on graduation and three years after graduation.

The programme also placed 19th for international course experience, which includes exchanges, research projects, study tours and company internships in countries other than where the school is based.

NTU's Nanyang Business School took 38th spot in the rankings. The school said it was "ranked 12th in the world for value-for-money, ahead of the world's top five business schools".

Graduates from the NUS MBA programme saw their salaries increase 1.5 times on average over their pre-MBA salaries, and the income of Nanyang MBA graduates also "more than doubled" three years after they obtained their degrees, the schools said.

The FT rankings were topped this year by Harvard Business School, with the Stanford Graduate School of Business taking second place. London Business School and the Wharton school at the University of Pennsylvania took third and fourth spots respectively, while Columbia Business School and Insead were joint fifth.