I'm a teacher and I'm committed to education, but I'd like to make the case that is it not education but educators who form and challenge a person's identity.
Rarely is one changed in any significant and lasting way by learning something in a vacuum. Generally it is a teacher or a classroom environment which prompts thought and discussion and encourages internalizing by a student.
Looking back on one's education rarely causes a review of learned material. Instead, we reflect upon the teachers and classes which challenged us and spurred us on to greater, higher things.
Admittedly, we have probably all had turning points in our education where we discovered we "love" math or "hate" English or "aren't good at art." That's material, but it's also presenter. There aren't too many instances where we remember the teacher as being terrible while the subject matter was excellent. True education is a combination of an effective teacher presenting strong material in a memorable, engaging, and challenging way.