You have to certify on or before January 15th. You can weigh in 1 weight class above certification after you certify. Example: I can certify at 125 on Dec. 12th. Then in January if I am having a tough time move up to 130 without breaking certification. The rule states that half of your matches must be at the certified weight if you want to wrestle that weight at regionals. If a wrestler makes his certified weight on or before Jan. 15 that counts. You don't have to set a date that everyone certifies on. You just have to declare and make your certified weight on or before the 15th. The question I have is if you move up a weight say from 125 to 130 do you get to weigh 132 (do you earn the 2 pound growth allowance)