Response to Intervention (RtI) is not just Special Ed's way to help identify learning disabilities in students. It does not have anything to do with IEP's or Inclusion. This happens before identification, for all students. It's a tiered system of helping struggling students through use of research-valdidated interventions for their specific need. For example, a 6 year student is having trouble decoding and the core curriculum is a whole language based program with very little decoding, you wouldn't use comprehension strategies to help the student with the problem.
The great thing about RtI is that through progress monitoring of students reading development, the school can determine if their curriculum is working for their students (at least 80% is the goal). RtI can also deal with behavior problems and math problems, but most districts aren't there yet.
PATTAN is the PA training organization for teachers. Their site has a wealth of info on RtI and others. Here's a link to some good information describing RtI:
http://www.pattan.k12.pa.us/teachlead/ResponsetoIntervention(RtI).aspx
This is the site for the FLorida Center for Reading Research (excellent information about reading programs. If your program is weak in an area you can supplement :
http://www.fcrr.org/
DIBELS-If you don't know about this yet, you should. It's free highly researched and almost used everywhere (because it's free)
http://dibels.uoregon.edu/
Lastly, interventioncentral.org free research based interventions available for teachers, administrators, parents. This is a very useful site.
If you don't know much about something, be truthful about it. Better to be honest, than to misspeak about a particular topic. Advice on the DIS is worth what you paid for it. Research around about topics. The sites I listed are good, check them out and their references. Good luck on your interview.