okay 2 semester nw freshman course the 1st one is common for every freshman student depending on ur streams all natural studs. take the same course and that goes for social and teaching streams too then after taking ur course which will be 7... 6 of them have grade value HP is just pass or fail... u better pass it's so simple but if u don't u will add it in the next semester courses... after that there will be a coc exam to choose among Medicine, pharmacy, veterinary science, veterinary medicine, engineering, other natural and health science .... u just gonna pick one of the collages or school i don't know it depends on the uv ur at and i don't know about social science streams... then after that u'll take a second semester common course in ur collages or field of studies all engineering students take same courses just like others do in their respective fields .... then u'll take entrance exam if that's necessary to join that specific department if not u just have to choose and the ones with good grades get what they choose 1st and u might end up in the field u don't want to so u better get good grades and be smart on selecting the departments mnamn... i guess that's it but the 1st coc depends on ur semester grade, University entrance exam and the coc it self 50 %, 20% &30% respectively the second coc depends on -ur CGPA = ur 1st yr GPA - if there is entrance exam that counts too that's all more or less