Hi Morgan15,
Since you're asking about the 'accuracy' of this CAT Score, I would have to assume that you find it a bit 'questionable.' Thus, you might try thinking about this result in a different way: Can you come up with a reasonable explanation for WHY you would score 120 points higher after retaking this CAT? Have you studied to the point that you have the necessary knowledge and skills to earn this score?
Beyond those questions, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores for each)?
Goals:
4) What is your goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich