Hi shadman19922 ! Here is my observation.
Fifteen Percent of what? How much is fifteen percent? ten days? twenty days? A month?
In my opinion, it is better not to ask so many questions in a row. It gives a bit attacking/aggressive tone to your writing. Couldn't you replace those questions by one/two assertive sentences?
how many creditscredit hours
Employers may be reluctant to hire graduates who have too much speicalized knowlegde
You imply that the students have (may have) too much specialized knowledge though the argument states the opposite! The argument claims that it is the breadth of knowledge, not the specialized knowledge, that causes the unemployment. I think it is not wise to assume the opposite of the claim without much convincing reasoning.
If the author can prove, or at least show some statistics as to the practical management skills of the Classen Graduates
You haven't completed the sentence.
Since no timeline for the data is given. It may possilbe the Classen...
Merge them into a single sentence.