User blog comment:SodaCat/Birthdates According to Graduation Year/@comment-5385060-20160123055407/@comment-5385060-20160123062335

There is also the fact where I'm like "screw logic! If their birthday being ____ means they can't be in ___ grade, I don't give a shit!" For original stories, I would figure it all out. Since it is fanon, eh.