My dd expresses from time to time how very happy she was a Brown with her math-cs major and gasps that she might not have even found her major had she not gone to Brown. So I can tell you she and other Brown CS alums are pretty happy. She is at a startup now that came out of a Brown research group.
And there is a special section here to isolate chancing threads as chancing is a kid’s game, your own GC can do better for you knowing where kids from your school get admitted. Rough chances are always the admit rate of course, for super selective schools.