Fast 3 graduate credits.

[freeloader]

My first thought would be graduate-level professional development credits for teachers. This should get you around having to apply to a university/program and many of them (though not all) seem to be self-paced.

I looked at the ones available from the University of LaVerne, for instance—look they would cost around $400 for a 3-credit course. You can look at the syllabi, looked at a few that require reading some texts and writing 3 or 4 essays (unfortunately they don’t specify length for the readings or the assignments). I would imagine you could knock the work out pretty quickly, would just be a matter of how quickly they would get graded and transcripted. Might be able to find cheaper or exam-based to speed things up a bit more…