A 730 is very good. It seems that no two standardized tests use the same scoring scales, so it's handy to judge a score based on percentile instead. A percentile is a statistical measure of position that tells what percent of observations fall below the given observation. Most people are familiar with percentiles from children's doctor checkups. For example, if a boy's height is in the 70th percentile, that means that 70% of boys his age are shorter than he is. This link https://ged.com/percentile_rank/ tells you that an average score of 178 is the top 5% of test takers. This is the 95th percentile, meaning only 5% score as high as you or higher, and 95% score lower. A 178 average is a 4*178=712 total. Your score is higher than that, so you are above the 95th percentile That's pretty great! Your score report should give both a raw score and a percentile.