Go To School Mod Help?

Hey guys I really hope someone replies to this because I have an issue, I got the “go to school” mod and it works perfectly, I can go to school with my Sims. The only issue is I was told that every child or every teenager in the Sims World will attend the school and I was super excited for that because I wanted to have the chance to see & meet all the other Teenager Sims and Children Sims in the world. I prefer going to high school with my teen rather than elementary, but every time my Sim goes to school barely any other teens show up only about 4-5 at the most + a teacher, principle, ganitor & councellor. And it’s frustraing me because I know there is defiantly more than 5 teen sims in the world because I’ve created a bunch of teen sims hoping they would show up at school but they never do, only the same 4-5 teens show up everyday and I don’t know why, I’m wondering if anyone else is having this issue and can help me because I really want to have heaps of people in my school (because it’s pretty big) and I want to see all the different teens and make friends and have the classrooms filled.