The cautionary statement I am about to write has not negatively impacted my family personally but is generally not understood by prospective boarding school students and parents:
College matriculation is enhanced by a “top” boarding school only if the student becomes a much more interesting and impressive person than he or she would have become at the LPS. If the student is basically the same as he or she would have been, even if super impressive, the chances of acceptance to the most prestigious universities are decreased, not enhanced, by attending a top boarding school.