No sim teens at school

They make the Townie teens go to school with your Sims not the ones you create or play like this has been asked since they created the game, it's so dumb to put Townie Teens in the school but not the teens that's a played house. 

It's the biggest let down from high school years, I too was expecting to see all the cousins and neighbours at school , I was so disappointed. and to top it all off the same townies are class mates with the parents and grandparents of my sim.

It priorizes premade teen townies or random generated ones. What I have done with create multiple townie households and delete all random generated townies or premade townies. I put them many as unplayed so it pulls from those instead.