Hey can u tell me the validaty of GMAT?

Answer 1

Validity of GMAT mean two things:

Acceptance period:

Official GMAT® score results are kept on file for 10 years. Candidates may request score reports that are up to 10 years old provided they do not have valid scores within the past five years. Most schools accept scores no older than five years. However, score reports for tests taken up to 10 years ago are still available for reporting. For more information, please see Scores More than Five Years Old.

Other meaning is how meaningfull are they:

The validity of GMAT® scores can be described as the degree to which the scores relate to or predict first-year grades in graduate management programs. Since 1978, GMAC® has conducted many studies of the validity of GMAT® scores. In all studies, GMAT® scores, undergraduate grade point averages, and average grades for the first year of graduate school were obtained.

The most recent validity studies indicate that the average correlation between GMAT® Verbal, Quantitative, and Analytical Writing Assessment (AWA) scores and mid-program graduate management school grades was 0.48 (a 1.0 indicates perfect accuracy of prediction). The median correlation between undergraduate grade point average (GPA) and first-year graduate management school grades was 0.28. When GMAT® scores were combined with undergraduate GPA, the median correlation was 0.53.

These results indicate that GMAT® scores are generally better than undergraduate GPAs for predicting average grades in the first-year of graduate management school. However, the best predictor is obtained by combining GMAT® scores and the undergraduate GPA.
Validity Studies

For information on how your school can obtain a GMAT® validity study, see the article on the Validity Study Service in the Research and Trends section of this Web site.

Answer 2

it valid up to three years.