It depends on the school. Some schools say it is year of test to application cycle... Like you took the test in 09 (anytime) you started your application in 12, you're still okay. Some say you took the test in jan 09 but applied in June 12, not okay. Some say you took the test in Jan 09, you are good through the 11-12 application cycle, but that's it... It really depends on the school, if you're on the border, it is best to check or just retake it...