Help!!! Columbia P&S info

Does anyone have any info on the average number of hours a typical week is spent on lecture hours for 1st and 2nd year P&S students. Also is it mainly PBL or traditional mode lectures and how are the exams broken down? Lastly for those of you that were fortunate to attend the 2nd look, what were your impressions? How diverse was the class? I did not previously consider P&S as a viable option so I did not make it out for their 2nd look weekend...obviously i am having a change of heart and any input would be appreciated.