The Advantages And Disadvantages of entering a POLYTECHNIC / JUNIOR COLLEGE

From what my older cousin told me, he said the in Polytechnic, it'll be less stressful and we have more social area. If you're in Junior College and you can't graduate to UNIVERSITY (I'M AIMING TO GO THERE!), you either have to retake the exam, go to a Polytechnic and... The other I forgot. SORRY! That's why I think that I should go to a Polytechnic! Oh, and does anyone find me wierd? My ambition is to become a surgeon, but my Science grades are like... Down to the drain.