I don't have experience with DYS (DC18 was 17 when I heard about it), but I have had to deal with some of that from school programs and accommodations, as DC15 is MG while DC18 is PG and E2, requiring several different educational accommodations and supplimental programs for school. DC15 has been frustrated and has felt left out/not good enough after having her older brother get to go to special programs and making the cut-off for his own programs while she misses the cut-off. It has been better in high school, where she has made the regular gifted program and can do her own special activities, but she still has some frustration with not feeling smart enough to compete with him and with trying to prove that she deserves to be in the accelerated program.