State-owned enterprises or institutions may have a basic minimum standard, but the future development still depends on individual ability.
The salary of private enterprises has little to do with academic qualifications. It mainly depends on your major and what you can do for the enterprise. In some enterprises, the salaries of students who graduated from technical schools are higher than those of undergraduates.
If you are a student at school, please know more about the current market demand and employment prospects of your major, and use your spare time to find more opportunities to learn some useful abilities for future work.
On the other hand, if you are a business owner, will you hire someone who can only take exams to work for you? Or do you want to hire someone who is flexible and can make money for you?
I suggest that you don't pay too much attention to salary in the first two years of your work, but pay attention to the cultivation of your ability, so that you can have better development prospects.