GMATPrep score - please advise on possible real score

[edins]

Dear all,

I did GMATPrep I and GMATPrep II and scored 530 and 510, respectively. I also did MGMAT and scored 550.
My score on GMATPrep's was approximately Q30 and V30 or so. I tried GMATFocus and got prediction of quant score in the range from 20 to 28. For the last week or two, I have been practicing quant part to hopefully improve.
My school requires only 450 as it's public University in Europe.
I was wandering if you can help me with your experiences. Can I more and less rely on GMATPrep score and think that I won't score less than 450 on real test.
Thank you.

[Osirus@VeritasPrep]

My actual GMAT score was 20 points below my GMAT prep score. The range is plus or minus 30 points.

[binurajbinu]

The scores you get in GMAT PREP and actual GMAT are very similar. Maybe you can say "what you get in GMAT Prep is what you get in Actual GMAT".

[CalGMAT]

Just wanted to share my experience -

I took the second GMAT Prep Test and got a 680 (q. 41. v.41) last week. I took the real exam today and scored a 550 (q. 36, v. 29). For the GMAT Prep Test last week, I did the essays and didn't take more than a 5 minute break - I can't figure out why my score dropped so much from the Prep to the real thing.

Hope this doesn't happen to anyone else - but the GMAT Prep test didn't correlate well for me.