My teacher hasn't actually written ANY of mine of anyone else's in my class at all. that's sort of cheating if they actually write your PIP.
my teacher has however guided us through the whole process.
it did depend on who was willing to get going in our class (as in who chose their topic early, did background research, got their emthodologies done when they needed to be), but she was really supportive of everyone. she has given us her home number and email address to contact over the holidays as well.
something that was annoying but really helped was us getting assessment tasks along the way that had to do with our PIP. we had to do a mini PIP, with one methodology, the intro, log book, and a explanation of our x-cultural study in it. it was a heaps good boost for our PIPs. she also made an ass task about our chapter headings- we had to have our chapter headings ready and stick in ever bit of info we had in point form. we didnt need to write our PIP, or even have every piece of info (unless we'd completed all our methodologies), but it has given me a skeleton for my whole PIP and now all i have to do these holidays is fill in the gaps with actualy writing and quantify my data into pretty tables.
my teachers has been frickin awesome over the past year with the PIP and it has defiantely given us all a big advantage. the only downside was having to do a squillion assessment tasks becuase she added more so they had to do with our PIP. but it has overall been heaps beneficial.