Most programs also have a time limit for completion, around 4 years for a Masters and 7 for a PhD. I did my Master's part-time while working and it was brutal

Most programs also have a time limit for completion, around 4 years for a Masters and 7 for a PhD. I did my Master's part-time while working and it was brutal to work full-time then head to class for 3+ hours several times a week, or have to make special arrangements so I could leave work early to make a specific class. I also remember desperately preparing for a defense scheduled days before the birth of my second child (I finished up 2 days before he was born!). I found that FT grad students and some profs treat you poorly because you're "a PT industry" student, and your co-workers, boss, etc. treat you like you're taking a continuing ed course from the learning annex. It's the worst of both worlds.