Off to a much better start than the first game (The Fosters). Giving it a 3.9 rating based on the following:
+ Familiar characters from the first game, even has an intro to get you up to speed if you didn't play it.
+ A good mix of older and younger love interests, with decent body shapes that vary
+ Music that helps set the mood in scenes
+ Good enough renders that no one looks plastic. Varied environments and good lighting for most.
+ Some choices that don't really appear to push the story one way or the other (yet).
+ Decently smooth animations, though sex scenes aren't very long. Occasionally has different camera angles.
+ Enough sex scenes to keep you interested, but only a handful of full-on penetration scenes. What is there is good though.
+ The story is a bit frivolous and less involved than the first game, but it's more light-hearted and believable which I appreciated more.
- Very short at this point (~5-6 hours), hopefully development speed keeps moving steadily.
- Game doesn't have character Bios which would have been helpful for people playing 1st time, returning after a while, or just to refresh their memories on who is who.
- Not many kinks. Handjob, oral, vaginal, one (?) anal, some virginity scenes. Spanking early on, and some humiliation (for a side-char) near the end.
I would VERY much like to see expanded sex scenes - the ones that are there are short animation loops, and often end quickly. As a result, it's easy to pass them right by without getting engaged in them.
It's worth playing, though I highly recommend playing (or re-playing) the first game (The Fosters) before playing Back 2 School. I went into it cold (~4-5 months after playing the first game), and had forgotten who everyone was.