“Because this is Not the purpose of college.”
Actually, the purpose of college for many years was supposed to be to expose all students to the important streams of Western thought (mostly non-Jewish), and to teach critical thinking skills. There really isn’t anything inherently wrong with that; a yeshiva or day school graduate who is well-grounded in the ikkarim of our faith and the moral and ethical principles that follow from them will be able to filter out the ideologies that are incompatible with Judaism.
Is there a problem with our educational system that people are coming out not well grounded? I continue to be amazed at the number of frum people who act as if our attitude towards abortion is the same as the Catholic Church, or that the Torah’s attitude towards economics is similar to that of Ayn Rand!