Withdrawing from course as grad student

I'm an ECE grad student and considering withdrawing from a course, but as far as I know grad students aren't allowed to drop any classes for any reason except for extreme circumstances, is there seriously no way to drop and I must stay in the course? I would drop to part-time but I don't have anything that stipulates me being full-time and I don't think it would affect me in any other way if I dropped, but since I don't have a major emergency or issue being allowed to drop it seems unlikely. Where do I go from here?