Some colleges could favor applicants at less rigorous high schools, that have LOWER stats.
For example, the State of Texas has the top 10% rule (it’s some % lower today). Students have been known to transfer to other, lower performing high schools, so they can get into the top 6 or 7% and get accepted into UT-Austin, etc.
The University of Florida will consider in-state geographical residence as part of it’s holistic admissions. It wants to accept students from across the state, including rural high schools.
Of course, far more students get accepted from high performing schools, but in some cases, the lower performing school can be an advantage or at least not a major barrier.