Networking interview where grades/school do not match firm average?

[Salamon26]

Through networking, I got an interview at a very competitive law firm. I am at a second tier school and my grades are a tad below 1/3rd (like top 38%).  It sounds like the place is giving me an initial interview (1 attorney interviewing me for 30 minutes). 

Is there any chance I will get past the pre-screening interview because of my lack of elite school/grades?  I am trying to get excited about going, but it's hard since I know this place would never have given me an interview if I applied directly (they don't even come to my school for OCI). 

[nealric]

Just try to knock their socks off in the interview.

Keep in mind that it may be either a screening interview or more of a courtesy interview. Either way, if you knock their socks off, you do have a chance.

[Salamon26]

How do I "knock their socks off" without top grades and/or a top school on my resume though? I have a great interview personality but I don't know if that will cancel out all the other immense obstacles I face.