<p>OP is asking if it is possible that some colleges do not like certain high schools. He is not asking if it is the norm. Most CC’ers are also not your normal students/families who go to your local in-state. For most 29950 high schools in this country, adcoms would look at them just another high school unless if they stand out for whatever reason, good or bad. Top tier college adcoms will have regional reps who would know high schools in that region well, but would only know them to the extend they stand out.</p>
<p>Yes, a school which sends 5 students to Harvard and only 1 Brown is a cause for concern for any students who want to apply to Brown. A well known private school in NYC was getting shut out of Harvard for few years. The board told the headmaster to take care of the situation or she was going to be out. She paid her respect to the adcoms and smoothed out whatever issues they had. The following year, few students were admitted again. </p>