Here is a good list of free online portfolios for you guys to play aound with:
besides those here are some more:
All of these look very different and have different features so choose whichever suits you best!
Things to think about when choosing:
Do you want to be able to customize it a lot or do you want a layout that’s preset?
Would you like to post a very large amount of images?
Could people (maybe people that could hire you) find you easily?
Is the website you chose geared toward your kind of art? (photography, illustration, etc)
Can others give you feedback?
Can you keep it private?
Is it more like a network or more like an actual portfolio?