Hi all, am just wondering, I see alot of people talking about their NTRP ratings of being 3.5, 4, 5.5 etc... I'm not asking what the ratings mean. I've read the descriptions for each rating level. Instead, I was just curious about how you guys get a particular rating? Do you have to take some kind of test administered by the USTA, after which you are certified to have a particular rating? Or is it really just an informal guide for players to decide what standard they're at. (In case you're wondering, I live in Singapore, South-East Asia, and I'm not aware of what the rating system over here is, or if we even have one for that matter.) thanks all.