Organization devoted to improving the rigor and clarity of the process of standard-setting and testing. Provides standard-setting and benchmarking services to states and districts.

The organization responsible for the American College Test, required for admission to the public colleges in the majority of states; manages other tests and programs, too.

Organization representing hundreds of colleges responsible for the Scholastic Assessment Test (SAT), the Advanced Placement (AP) program, and various equity efforts.

EdTrust works for the high academic achievement of all students at all levels, kindergarten through college.

ISC home page, headquarters for research on the Third International Mathematics and Science Study (TIMSS), PIRLS, and other ISC projects.

Made up of elected and appointed officials; oversees the content and operation of the National Assessment of Educational Progress (NAEP).

An association of professionals with responsibilities for administering assessment programs in K-12 public educational settings. A selection of their research papers and newsletters are available on the site.

A nonprofit advocacy organization dedicated to preventing the misuse of standardized tests.

The primary U.S. organization of measurement researchers and practitioners involved in educational testing.

The new Programme for International Student Assessment of the OECD, involves dozens of countries testing their 15 year olds' skills and knowledge as they approach the end of compulsory education.