My med school had a lecture during our pre-clinical years about abortion that talked about the different techniques of abortion and so forth. In our ethics class we did talk about the ethics of a doctor who does not agree with abortion referring for abortion and such.
If a school is going to have this issue as part of the curriculum, I think that the best way to handle it would be to have physicians from both sides of the abortion debate address the class. Since this is a subject that most people have strong opinions about, it is very difficult for any one individual to have a truly unbiased view of it.
For example, while an abortion advocate might consider it very important to talk about the dangers of illegal abortions, if I were involved in designing a course talking about abortion I'd want to make sure that any discussion of abortion ethics included a discussion of the complications of legal abortions
and how some abortion clinics do not engage in ethical practices (like
this awesome guy; note that I am being extremely sarcastic there). I'd also include a discussion of
the ethics of the future of prenatal testing when we may be able to screen out anyone with the slightest imperfection (or perceived imperfection) before birth.
Meanwhile, I bet there are a lot of Catholic doctors who would consider it vital to include a discussion on natural family planning so that you can properly educate your future patients on it. When you consider all the different potential opinions, angles, and agendas on this sort of controversial issue, actually, I don't blame schools for not wanting to get into it. Most schools have student clubs for both side of the abortion debate if a student really wants to deal with the topic.