<p>Much of it stems from the methodology USNews uses which creates a lot of inertia.</p>
<p>From USNews Website:</p>
<p>Quality Assessment (weighted by .40)</p>
<pre><code>* Peer Assessment Score (.25)
In the fall of 2005, law school deans, deans of academic affairs, the chair of faculty appointments, and the most recently tenured faculty members were asked to rate programs on a scale from "marginal" (1) to "outstanding" (5). Those individuals who did not know enough about a school to evaluate it fairly were asked to mark "don't know." A school's score is the average of all the respondents who rated it. Responses of "don't know" counted neither for nor against a school. About 67 percent of those surveyed responded.
- Assessment Score by Lawyers/Judges (.15)
In the fall of 2005, legal professionals, including the hiring partners of law firms, state attorneys general, and selected federal and state judges, were asked to rate programs on a scale from "marginal" (1) to "outstanding" (5). Those individuals who did not know enough about a school to evaluate it fairly were asked to mark "don't know." A school's score is the average of all the respondents who rated it. Responses of "don't know" counted neither for nor against a school. About 26 percent of those surveyed responded.
Selectivity (weighted by .25)
o Median LSAT Scores (.125)
The calculated median of the scores on the Law School Admissions Test of the 2004 entering class of the full-time J.D. program. The calculated median is the midpoint of the 25th and 75th percentile scores.
o Median Undergrad GPA (.10)
The calculated median of the undergraduate grade point average of the 2005 entering class of the full-time J.D. program. The calculated median is the midpoint of the 25th and 75th percentile scores.
o Acceptance Rate (.025)
The proportion of applicants to the full-time program who were accepted for entry into the 2005 entering class.
Placement Success (weighted by .20)
o Employment Rates for Graduates
The employment rates for the 2004 graduating class. Graduates who are working or pursuing graduate degrees are considered employed. Those graduates not seeking jobs are excluded. Employment rates are measure at graduation (.06) and nine months after graduation (.12). For the nine-month employment rate, 25 percent of those whose status is unknown are counted as employed.
o Bar Passage Rate (.02)
The ratio of the school's bar passage rate of the 2004 graduating class to that jurisdiction's overall state bar passage rate for first-time test takers in summer 2004 and winter 2005. The jurisdiction listed is the state where the largest number of 2004 graduates took the state bar exam.
Faculty Resources (weighted by .15)
o Expenditures Per Student
The average expenditures per student for the 2004 and 2005 fiscal years. The average instruction, library, and supporting services (.0975) are measured, as are all other items, including financial aid (.015).
o Student/Faculty Ratio (.03)
The ratio of students to faculty members for the fall 2005 class, using the American Bar Association definition.
o Library Resources (.0075)
The total number of volumes and titles in the school's law library at the end of the 2005 fiscal year.
Overall Rank: Data were standardized about their means, and standardized scores were weighted, totaled, and rescaled so that the top school received 100; others received their percentage of the top score.
Specialty Rankings: Legal educators nominated up to 15 schools in each field. Legal educators chosen were a selection of those listed in the Association of American Law Schools Directory of Law Teachers 2004-2005 Directory as currently teaching in the subject. Those schools that received the most nominations appear.
</code></pre>
<p>Peer assessment and lawyer/judge assessment are likely to have a lot of inertia as the quality of faculties change very little with time. </p>
<p>Selectivity is highly subjective. I would disagree with GPA being counted so much since GPA means different things at different schools. A science gpa is more difficult and shows different skills from a poli sci one. A MIT gpa shows harder work than a community college one. These things are not taken into accout at USNews wheras law schools do take quality of institution into some account (they have an index which adjusts gpa's from various school which can depend on the average lsat score from that school or from historical experience with students from certain universities).</p>
<p>Median LSAT scores is a more useful stat along with interquartile range but it is dangerously incomplete to judge an LSAT score without understanding the way the LSAT is scored.</p>
<p>A 170 is 98.5 percentile about, a 180, 99.9 percentile.</p>
<p>A 160 is around 85th percentile.</p>
<p>So the jump from a 160 to 162 median LSAT is quite different from 174 to 176, in both absolute terms and relative terms. A jump from 160 to 162 is more an improvement in terms of percentile jump. However a jump of the 75th percentile at harvard from 175 to 176 is still significant, because about 300 people make a 176, 450 make 175 (Not looking too close at the numbers so I could be way off but I think the general argument will be the same). That means about 150 of Harvard's incoming class are among those 300 that scored above a 176 on their LSAT's. Quite impressive, when only 50 people at Yale are able to do the same.</p>
<p>Employment rates is also heavily weighted without taking into account how much people from the class will make on average as well as national placement rates. UChicago is actually more successful at placing students nationally than Stanford is (though that may be because there are so many great jobs in silicon valley and california), and UChicago's salary interquartile range (for employed grads) is actually better than Stanford's.</p>
<p>As such, placement rates seems to be a bad indicator for top schools since they have nearly 100% placement anyways (and many schools game these stats, choosing to employ out of work students).</p>
<p>Anyways Leiter provides another venue of understanding statistics that is different and more interesting than USNews. <a href="http://www.leiterrankings.com/%5B/url%5D">http://www.leiterrankings.com/</a> He's also very smart about criticizing his own rankings and USnews wheras with USNews you would never know.</p>