Explore why, despite reports on the dangers of concussions, high school athletes feel pressured to hide their injuries in order to get back in the game with this video fromPBS NewsHourvideo from February 17th, 2014. According to the National Academy of Sciences, there are 11 recorded concussions for every 10,000 high school games and practices, twice the rate of college players. But researchers believe the number is actually much higher because many go unreported.