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The most prominent ranking of law schools today. This site is also helpful in that it contains additional information about all accredited schools, including direct links to the websites of most schools. This is therefore a good starting point for learning about schools.
This site provides helpful information about the LSAT generally, including the potential effect of the exam on future salary, the structure and meaning of the LSAT scoring scale, and information about law school admissions.
This is an excellent law blog that also contains numerous rankings and informational links in the upper-right hand corner, including overall rankings, firm placement rankings, academic placement rankings, and clerkship placement rankings.
This site provides further information about various schools.