The claim that Grove College (GC) should preserve its century-old tradition of all-female education rather than coeducation seems somewhat reasonable at the first glance. After all, the arguer does offer some relevant evidence, and the assumptions weakening this argument are not without any merit. However, three important concerns he/she fails to take into account might undermine the argument seriously.
In the first place, lacking more specific information about the two surveys which the argument based on, it is impossible to make an informed conclusion. In these two surveys, we find no sign of such procedures for random sampling, and have sufficient reasons to doubt if the sample is really representative enough to reflect the general attitudes of all the students or alumni as a whole. Meanwhile, the proportion--eighty percent and over half are too vague to support the arguer's conclusion.
In the second place, the arguer fails to convince us that the measure of keeping the college all-female would improve morale among students and convince alumni to keep supporting the college financially. For one thing, he/she ignores enormous other factors--such as the campus environment, the qualities of faculty and the leadership of the college-- which may be more vital in determining the students' moral. For another thing, the development of this area in which GC stands, the policies of the local government, the present economic circumstance of the alumni, and so on, all might influence the supporting of the alumni to the college in some degree. Any of the above scenarios, if true, would render the assumption a completely ill-founded one.
What further weakens the argument is the arguer pays little attention to the reaction of a majority of faculty members who agree with the coeducation. Common sense tells us that the faculty members often learn more about the conditions of learning and the thoughts of students, then their opinions may be more crucial to the decision of choosing coeducation or all-female education.
As it stands, the argument suffers from three critical flaws. To strengthen it, the arguer would have to demonstrate that the survey is representative enough to reflect most people's ideas on this subject. Furthermore, he/she might have to provide more founded and acceptable evidence to rule out all the above-mentioned possibilities that might undermine the argument.