Cynthia ,
I think you are absolutely doing the right thing in directing the students to the catalog and to the proper department to respond to their questions.
I would also become familiar with the required disclosures on your website, as the students may also have questions for you about the information contained in them.
You might not need to be able to address all of the specifics in the disclosures, but knowing where to direct them, as you do with financial aid, is important knowledge to have.
Donna Guisado