We noted in our piece on Visiting Colleges that responsible parents can decide what their kids need to learn in college, even if they go somewhere with minimal core requirements.
This should not be left to the kids to decide, because 1. It's too important 2. We know better than they do what they need to know to be educated adults with an openness to the richness of life, 3. We should have our own ideas about what we want our own kids to know (eg, any kid who doesn't know basic geology is a bore), 4. Colleges, in their pandering to students, tend to not want to tell them what they need to know, and 5. Who pays the piper calls the tune.
Here's an example of Mom and Pop's Minimum Required College Courses for a Liberal Arts education, regardless of major or interests (these can be met with High School APs or equivalent too):
Math and Science: Math through at least first year calc (BC calc), Statistics, Bio with lab, Physics with lab, Chem with lab, Geology intro, Astronomy
General: History of Western Thought (or Western Civ, or whatever it might be called), Art History Survey, Music History Survey, a political science course, Micro and Macro Economics, a Bible-based Christian Theology course, Intro to Accounting (if you can find something like that in a fancy college. If not, take over the summer at a local college. It will be a huge help to anything a person does in life, including volunteer jobs.)
History: American History, European History, Classical History
Literature: Shakespeare plus 2 other lit courses
This is a minimal foundation for "lifetime learning" and reading. A young person with this foundation ought to be able to discuss almost any subject that comes up - if maybe only superficially - and to know how to learn more about it efficiently when they want or need to do so. Corny but true.
nb: Before you debate me on this, note that these are minimal requirements. You ain't eddicated if you don't know this stuff. Of course, you can get it all at Great Courses.com, cheaper and better and without exams.