My quite shy DD2 was overlooked throughout primary. It may well be that she didn't put herself forward for big parts, and also her speech wasn't the clearest. (I was on the PTA the whole of her time there too!
)
However when they did the y6 leavers performance they added bits to her role because she was rehearsing so well, and after the performance a number of parents came up and said in surprised voices how well she had done.
She'd done out of school drama since y1, but just hadn't had the chance before.
Can't complain though, DD1 was Mary & Herod (different years) and Stephano (The Tempest).