We see a woman's bare back as she sleeps, the rest is covered by blankets.
We see a woman's bare back in the bathtub, everything else is covered by bubbles.
The main plot of the movie involves a professor who supposedly sleeps with many students on campus. So although the students are probably all "of age", it is a mature theme because of the power difference and the ethical controversy.
There are more than a couple of scenes where we see 2 females kiss. Sex is implied 3-4 times but there is no nudity at all.
A male and a female kiss; the male is shown under the sheets while the female is about to leave the room. Sex implied; no nudity at all.