I remember the people I knew and heard about in college that wanted to be elementary school teachers. Their mantra was something like: It doesn't matter how bad you do in the upper level math/chemistry/etc. classes, you can save your GPA by taking another course on how to set up a multicultural bulletin board. The elementary school teacher-wannabes were generally an unimpressive lot.
I recall coming out of my linear algebra final exam and hearing this exchange between two others in the class:
Student1:"Thank God! I never have to take another math class again!"
Student2:"What's your major?"
Student1:"Secondary Ed- Math"
And my brother the teacher gets upset when I say "Those who can, do. Those who can't, teach."