LSAC

Law School Admission Council LL.M. Credential Assembly Service for International Applicants
https://llm.lsac.org/llm/logon/splash.aspx
http://www.llm.lsac.org/

LSAC collects, authenticates, and processes all transcripts, TOEFL™ scores, and documents required by each law school to which you wish to apply

Five law school reports are included in your initial registration and are sent to law schools to which you apply

There is a $185 (US) fee for the
LL.M. Credential Assembly Service.

アメリカのロースクールへ行こう！: ＬＳＡＣ
http://uslawschool.cocolog-nifty.com/blog/cat1340046/index.html

LLM Life and Beyond : ＬＳＡＣについて（NU）
http://goodmen.exblog.jp/4359197/

LSAC｜アメロー
http://ameblo.jp/usllm/entry-10048865092.html