Ours was a business executive program, so, the schedule was set accordingly, with few courses in the daytime. I worked full time and studied a bit more than parttime at the beginning, then cut back, then took summer courses. It was a pity I couldn't take advantage of, let's say, the exchanges the program had to Europe or China or Korea like my other classmates who were studying full time and hopefully on scholarships, but many ofteh locals were on the same boat and that brought us together as we took our time for studies seriously.
You have to ask the people in your program if tests are scheduled on weekends. Meeting for group work have to be factored in. Som people here have mentioned they have to attend competitions and otehr schools activities, ours was not that but there were seminars and conferences and other stuff that while not mandatory, were "strongly encouraged". And anyways, there are many activities going on at school it is such a pity not to be able to take advantage of them.
What Ironlady says about not telling the school you work, I remember when I was looking around for schools to attend yes, some had that attitude. Mine was a bit wary of me as someone had told them I was working illegally -for the gov't, hah!-, and that is definetively a no-no. Fortunately, I was able to clear that up. Anyways, the foreigners who lived here were all working, while the international students on scholarships were looking into ways to stay -meaning get a job.
And it is true that some of the schools do not have the same attitude, especially the language centers or social science schools, they cannot grasp the fact that someone could actually work and study at the same time -which is why their would be teachers do not have such long practicum as we do in the West. Think about how they cuddle and mother their own locals, and how the only ones doing part time jobs are in the lower tier schools and hence are looked down on, so you can guess where the attitude comes from.
From a personal experience, few here knew I had been working and studying in college since I was 16/17, paying my own tuition and stuff. While this enhanced my resume and set me up for assistanships in colleges in the US, here in Taiwan I was surprised from how many it derived derison and disbelief. But then here lots of academic opportunities rely on guanxi and poor people -who have to work for their studies- have little.