Some students will ask yet more questions, while others may feel content with the information they have already received. Parents actually may be more inclined to speak with the volunteers. Make a list of these questions and pass them along to the Admission Office. However, in this particular situation the types of questions asked may not necessarily require black and white answers. Instead, it is more likely that volunteers will be asked questions that call for testimonial answers.
Volunteers are generalists.
However, in this case, the audience may be more interested in the specifics as to why the volunteers began their relationships with the University in the first place. These are questions only volunteers can answer from their unique perspectives.