In Ontario, if your score is between 400 – 440 you can apply to re-write the test immediately. If you achieve a score of less than 400 you must wait 3 months before writing the test again. Tests may only be written twice per calendar year. If it is essential that you write the test again, prior to the 3 month waiting period, or you need to write more than twice in a year, an appeal can be made to the GED(r) Administrator