Hello! I'm afraid I don't have time for a long response, but I'll start you off with a couple of resources. The link below provides an overview of the IPRC process (from the Ministry of Education).
http://www.edu.gov.on.ca/eng/general/elemsec/speced/speced.html
I don't know which school board you are in, but I'll guess Peel. I know each school board documents their special ed programs and processes and I think this one will help with the Peel info. Each school board will have similar documentation.
The process and programs:
http://www.peelschools.org/parents/facts/spec-edplan.htm
IPRC's
http://www.peelschools.org/parents/facts/iprc.htm
I think this guide in particular will help (each school board must write a similar guide, this is just for Peel):
In our school (TDSB) we have a MART (Methods and Resource? teacher. She coordinates the IPRC and IEP (Individual Education Plan) for all students who are being IPRC'd (it's a verb too!). If there is a similar role in your school, this person shouold be able to explain and support you through the process.
Our son has a physical disability and he is also gifted, so has a dual exceptionality and we've had our share of IPRC's and IEP's. It's important to come prepared with comments and questions. Remember that you can bring people to support you at the meeting. If you get very emotional, bring another family member or friend, or find an advocate for you/your child (not sure how to do this, I'm pretty feisty at this point, so I have felt OK going on my own since the first one years ago. I do know that I am more assertive/expressive on my own rather than having my hubby there. He agrees to stay out of it so I can avoid feeling the need to "check in" that he agrees with all that I am saying.
Know yourself and bring whoever you need.
Make the teacher your ally if you possibly can. You don't have to be his/her friend, but you do need to partner together for the good of your child. Building a positive relationship with your principal is also key.
Well this has been longer than I first thought, but it is a subject near and dear to me.
Good luck!
Twinmum