Have y'all sat down at parent teacher conferences and actually had a discussion with your kids teachers about what they are learning?
Not just how are they doing, or what are they going over, but how does it work?
Kids today are learning common core math. It's basically math using real world principles. Whereas we learned math focused on solving equations and that was it. Ever step/segment was focused on solving equations and they continued to pile more and more on it and were like "you'll figure it out in the end" and "youll need this one day, we don't know where or when and can't tell you how, but it's important to know."
My nephew is 17, and my cousins kids are 13-16. My cousin and his wife are teachers one having a degree in math. These kids arent geniuses but they are soaring through math. All I hear is, "they've taken more math in school than I did!" And "he's taking a class in high school for math I didn't get to take until college."
And they arent geniuses, they get good grades. One has a full academic scholarship as a junior. But they are able to learn and understand the math quicker.
Also from that standpoint if a kid falls behind its easier to teach the lesson or concepts they struggle with and get them back in line with the rest of the class. Whereas before when semester report cards came out, kids were already so far behind being that the rest of the class had already moved forward and practiced new concepts it was nearly impossible to catch up.