Students who got into S schools would have even more reason to go to them over A tier schools. All students would have even more reason to apply to S tier schoo

Students who got into S schools would have even more reason to go to them over A tier schools. All students would have even more reason to apply to S tier schools. A tier schools, who depend more on tuition dollars and would need to charge or find other sources of funding (likely without much success- governments have been cutting funding for decades, they're all already tapping private sources as much as they can). S tier schools would become comparably less desirable. This loop would continue (other than schools who try not to charge but depend on tuition dollars falling into the A range).