Lots of Basenjis - and others - live quite happily as single dogs. Some even prefer to have all the human attention to themselves <g>Going to classes and dog parks will be great chances to interact with other dogs.
Some dogs do experience separation anxiety and do better with another dog in the house. It seems to me that this is an issue that is seen more often in rescues. (there are also certain breeds that are more prone to it). Based on what I've read: Some people set themselves up for separation anxiety by taking a week or more off work when they bring a new dog home. So the dog gets used to a new environment where it's new human is around 24 hours a day, and then all of a sudden they start disappearing for long periods and the dog is suddenly all alone… It's much easier on a dog if then routine you establish when you first bring him/her home is your normal routine.
Of course, with 5 students, chances are there's going to be somebody around most of the time, anyway.</g>