I think for the Navy "PFA" (Physical Fitness Assessment...long live the PRT), you start with a score of 300. For every pushup less than the max, you lose 2 points. For every situp less than the max, you lose 2 points. For every 10 seconds of run less than the max, you lose a point. Every event is also given a score, like "Outstanding High" or "Excellent Medium". Your overall PFA "grade" will be the lowest one of those. Lets say you got Outstanding High on Pushups, Outstanding Low on Situps, and Excellent Medium on the run. You would then have an overall PFA of Excellent Medium. To graduate from OCS, you need to be able to do 71 pushups, 87 situps, and do the run in 10:30 (this is the tenth week "OUT PFA", based on a male under the age of 30).