I did the first year of IB, and i aint a bad student, i got 10A*, A, B in my gcses. But, i was sabotaged by 3 of the science teachers. There was this group 4 project, where I was given the 2 worst students in my class to work with. I did 90% of the project on my own since they would simply say piss off when I said lets do something. So, i get the lowest grade of a 3 in the entire school, and they get 4, and 5! I know the criteria are mainly working TOGETHER skills, but if the person doesnt want to work, what can u show? Especially if they get a higher grade that is ridiculous! I also noticed that IB was quite hard for me to get 7's on, due to the extremely low teacher's ability in my school, and ofcourse some of their baises.
TO cut the long story short, I changed to A levles, having already takedn maths with an A, and I believe the sole problem with IB is the INTERNAL MARKING if u dont have support on your side. Also, i believe only exam taking is much more of a correct method of examination since it doesnt include subjective marking to that extent.
However, I think IB is better for weak students, who can rely on internal assesement, and on EXTREMELY HARD WORKING students, who wanna test their limits. I am not htat hard working, so i think A levels is best for me.