If you've been around Age-Group swimming for even a short period of time, you've probably heard about swimming time standards! We are going to try and take some of the confusion out of the time standard discussion...but first, some basic terminology! SCY - Short Course Yards (based on a 25-yard pool, which we normally swim at practice) LCM - Long Course Meters (based on a 50-meter pool, this would be our pool in the LONG direction) SCM - Short Course Meters (based on a 25-meter pool, I only know of...