I'm right on the middle of the fence on this one. I just watched the pilot, and am willing to give it a bit more of a chance, but the plot as revealed so far is SO played out and done to death. Teacher involved with student unknowingly? Hmm...saw that, on "One Tree Hill". It's not anywhere close to being well written, or well acted, but the show DOES have Holly Marie Combs, Laura Leighton, and Chad Lowe, not to mention, Troian Bellisario, whose dad was behind two of my all-time favourite shows. So, these are the reasons (that and wanting to know what the whole "Jenna thing" is, though it's probably totally lame in the end) that I am going to stick around and give it a fair shot.
It is decent enough to watch, so far, as long as you look past the fact that everything that has been written on the show has been done and done, and done to death before.