<p>I know that you can register for certain classes through the extension school / DCE, but is it possible to pay to take a course like Math 25? Has anyone done something similar? I ask because it isn’t listed on the extension school website, but it would be a cool class to take.</p>
<p>I know a student, now at Harvard, who was allowed to audit Math 25 while in high school. If the class is not offered through the Extension School, it can only be audited, i.e., not taken for college credit. This is entirely up to the instructor of the course.</p>