If we want to reduce the cost of a college education reduce the availability of student loans. Student loans are passed out like candy on Halloween, allowing universities to continue to raise tuition and bloat their administrative staffs.
There are many professions that don't require a college degree but possibly an apprenticeship or trade school is the best for some people. They pay a lot better than social services jobs that require a degree and cost a lot in tuition. You don't pay back a 100k loan on a $20,000 annual salary.