For each class, generally there are many different times to take a course. This makes working or having another commitment while going to school very easy—or at least easier. Most classes don't require too much homework on a daily basis, and all deadlines for projects and papers are reasonable. If something major comes up, the professors and administration are very helpful in finding a solution that fits you.
Taking online or hybrid classes allows for more flexibility, making them very helpful for students who also work or have a family.