Are the height predictors accurate?

Babycenter.com but it's age range only goes up to 12 years of age; Another thing you could do is take your Parents height in inches, add them together then divide it by 2 then take away 0.7 and...

I am guessing that you might mean the average height? Because each individual would have their own particular height and at 15 due to different boys being at different stages of puberty, plus genetic...

There is no way to "predict" how tall you will be unfortunately. It's one of the surprises of growing up!

Your most likely to be either 5.1, 5.2, or maybe 5.3 if your lucky

Find a friend who knows how tall they are and then measure yourself against them. Or, go to 7-11 and measure yourself against the sticker by the door. Convenience stores usually have a measurement...