Thanks for the reply. It works like you said, and helps partly. Removing the redefinition of the "CHAPTER page" line and changing it to \pagestyle{headings} makes the "CHAPTER page" line appear at the same level on the two pages. However, there are two problems:
I'm trying to write my dissertation using LaTeX. I downloaded a class file provided by my university. The \tableofcontents command was defined in the class file as follows: