On the other hand, learning general knowledge in multiple fields definitely will not help people in universities/university graduates/university students to get a better job, that which is the main matter that the school has to be focused on, achieve the highest rate of graduates finding a job. Because It is useless to have people who are well prepared in different/a variety of fields if they cannot apply their knowledge to get employed finding a job with decent income. For instance, most of the universities in China are offering and preparing their students based on the necessity employees that either needs of international and local companies. Subjects such as engineering and finance are given priority instead of/over management [a set phrase: X is given priority OVER Y] or general information, as that is what the current market is demanding indeed.

In conclusion, general knowledge the general information students learn in universities is encouraged to apply to the real world/to everyday life (in universities) and not only to specific one jobs/positions that the companies offer. ask for. [This sentence seems contrary to what your opinion has been in the rest of the essay.] However, the real demand of employment is actually given by society. Therefore, schools which is give the preparation to prepare (their) students for those specific fields are reasonably right.

Sorry for splitting my correction into 2 posts, when I tried to submit it as one post it wouldn't go through.

PART 2

On the other hand, learning general knowledge definitely will not help people in universities to get a better job. But this is the main matter that the school has to be focused on: achieving the highest rate of post-graduate employment. Because it is impractical that people are well prepared in different fields if they cannot get employed with decent incomes. For instance, most of the universities in China are offering and preparing their students based on the needs of international or local companies. Skills such as engineering and finance are given priority instead of management or general formation; this is how the principle of demand works in a market.
In conclusion, general knowledge education should be encouraged in universities, and not only specialized education in the labor roles that companies demand. However, the real demand of employment is actually given by society. Therefore, schools which prepare students for those specific fields are reasonably right.

Though I disagree with your position on prioritizing the labor demand of a free market system over the general formation of individual man, I applaud your good work in getting your main point across. There are nouns which help simplify your sentences. 

Essay:

The content (that) high-level institutions are teaching to their students has raised concern among [parents]/heightened people's concern recently. They argue the information that the students learn in school should be (considered) general information, then so that they the students are able to discuss about and give their opinion about relevant issues, (and give their opinion) rather than just preparing them for the positions that the current actual market demands. This essay will discuss both points of views while giving/providing explanations for and examples of why the idea of training students for positions that the workplaces require is more reasonable [than giving students a broader general education].
It is logical the way to think students should be prepared for with general knowledge (in several fields) in order to give their opinion about/on to diverse topics. In order to do that, schools should get their pupils involved in/schools should encourage their students to take classes in several fields. For example, adding optional courses such as in which students can have debates about actual current social issues. This way, the individual would be able to develop their interests of in/their abilities to discuss the problems that are facing nowadays in our society today.