This past semester I had several faculty use this mic to record not only their voice, but the students' voices as well in the classroom. This was done in a small classroom setting (fewer that 24). The recording quality was a bit low with some reverberation at times, depending on how far the student was from the microphone that was talking and also the acoustics of the room. Overall it did pretty well, but we are still searching for a better solution. On a scale of 1-10 I'd give it a 6-7 because of the sound quality.
This mic does, however, work great with Skype calls.