<p>Actually, this year a fairly high number of students from Penn are matriculating to Yale Law (over 5, I believe). It varies from year to year. But, regardless, Penn isn't "over 10,000" undergraduates and you posted. The College has 6,560 students, which is about the same size as Harvard or Brown, and most of the applicants to law school come from the College (though there are some from Wharton, but very few from Engineering and it's rare for Nursing students to apply to law school). Also, many Penn students historically have chosen Harvard Law over Yale Law (I don't really know why, but it's true). Also, YLS is very small, so matriculation numbers are not really an indicator of the strength of the law school applicant pool at top colleges. Penn is also very well represented at HLS, greater than larger schools like UC Berkeley, UVA, U Michigan, and Cornell, but also greater than smaller schools as well like Georgetown, Columbia, Brown, U Chicago, etc.</p>