Re: Worried about height - please help
I think as package deal has mentioned genetics determines how tall you will be. If you're not already I suggest eating healthy foods and ensuring you're consuming the recommended amounts of nutrients for a male your age. Although this probably won't increase your maximum height potential, consuming the right nutrients will ensure you won't have malnutrition which could stunt your growth.
When I was 15 I was 5'8" but as an adult my height is 6'0". You still have a few more years of possible growth so there's no guarantee your current height will be permanent.