Can I list all of my students for the year in one Research Advising record?

No. The Research Advising data screen captures information for one student per data screen. The Duplicate feature can help reduce the data entry burden. On the Research Advising summary screen, click the checkbox to the right of an entry that is similar to the student you need to add. Then use the Duplicate button to create a copy. Edit that copy, updating the fields as needed to describe the research advising activity.