Don't understand why people obsess about 45 'perfect points'. Wouldn't be that difficult if you took math studies, ESS, a language you were fluent in at B level, etc.
EDIT: Since a few people negged me I thought I'd explain myself a bit better. I'm guessing a lot of people take those subjects and took offense, but it wasn't really my aim to belittle them
I believe it's always important to aim for the best, however in the case of IB I don't think getting 45 points says anything about your intelligence or your character. I think it is a fault of the IB to place so much emphasis on overall point score, as I often see many people compromising their education for their overall point score.
For example, in my Chinese AB Initio class, there was one girl completely fluent in Chinese from day 1. However, since she had never officially studied it at school she was allowed to take it at AB Initio level. She would sleep during class, or sit there not listening, and basically over the course of two years learn nothing, for the sake of an easy 7 at the end.
On the other hand, another girl in my year was completely fluent in Spanish, yet had also never studied it and could have easily had a 7 at spanish B level without any effort. However, she did actually want to learn something over 2 years and chose to take Mandarin B level (she had studied it at GCSE and enjoyed it). After a lot of hard work she got a 5 in the finals.
So, the overall point score shows girl 1 as the 'smarter' one. But it's obvious to see who achieved the most. There are more cases where people capable of (probably) getting a 5 in math standard and learning a lot more choose to do studies just becuase its less effort and higher point score. That's why I think it's better for you to aim for the best you can in each individual subject rather than concentrating on getting a '45'.