<p>This semester, the largest class size is 28, followed by 25. The rest are all under 20, and often under 10 students, with one class of 3 students. The average comes out to about 11 students.</p>
<p>I don’t know about the number of majors, but [url="<a href="http://www.wellesley.edu/Education/Teacher_ed/teacher_ed.html"]here[/url">http://www.wellesley.edu/Education/Teacher_ed/teacher_ed.html"]here[/url</a>] is the information on teacher certification. You would need to talk to the education department about your options! If you want middle school or high school certification, you can only major in a select number of subjects. Elementary certification is less restrictive.</p>