What is the difference in the standard and course quality between GCSE sport, to pursuing it in a degree.

I currently study Sport, Exercise and Physical Activity as a degree, after doing GCSE physical education for 2 years, BTEC sport for 2 years, A-Level physical education for a further two years and one year of a subsidiary diploma at level 3. A lot of what I have larned from year 10 through to university has been thoroughly useful and I can see career prospects at the end of my degree in a range of different occupations. The quality of the content of the course progresses throughout with similar content specialising later on in the degree. The main principles considered are sport psychology, sport physiology and the culture/history behind sport. There are other optional modules allowing for a student to learn something new in sport such as media.