Protesters held a sit-in at Strathclyde University in Glasgow to protest at the charging of fees for students from the rest of the UK.
Some 40 students travelled from universities across Scotland, including Glasgow, Edinburgh and St Andrews, to stage the demonstration.
"The introduction of fees and continuing cuts are an attack on the values of free education Scotland has always prided itself on," a protest spokesman said.
The move came as Edinburgh Napier University became the latest to unveil fees for students from the rest of the UK.
It will charge students form England, Wales and Northern Ireland £6500 a year, with a four-year honours degree costing £26,000.
However, Robin Parker, president of NUS Scotland, said: "This is another example of a Scottish university setting the cost of their degree as high as anything we have seen in England."
"Just because this isn't as high as Edinburgh, St Andrews or at the University of the West of Scotland, we should not forget the average degree at Oxford and Cambridge will cost less than £25,000. This is ridiculous."