Yes, growth potential means there is still room to grow so he is not done growing yet. I have noticed with my sons, that they were usually shorter in middle school, started to grow a little their freshman year, then grew more as they got closer to graduation and continued to grow after graduation. I cannot say how tall they may get, but it sounds like the doctor will most likely keep an eye on their growth curve for their age to be sure they continue to progress at their rate. IT sounds like they are healthy active boys. Congratulations on such fine young men!
I would not be surprised if the doctor xrayed the younger son later on down the road if his growth still seems slower than expected.
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