This web site was developed to make MOSART's assessment instruments available to individuals involved in science education. The tests are free and can be accessed after completion of four online tutorials that explain test design, use, scoring, and interpretation of results.

Each MOSART assessment instrument comprises a set of multiple-choice items that are linked to the K–12 physical science and earth science content, and K–8 life science content in the NRC National Science Education Standards, as well as to the research literature documenting misconceptions concerning science concepts. (Mathematics does not fall within MOSART's scope.)

MOSART tests probe for any conceptual shift(s) as a result of professional development activities, course work, or other intervention. MOSART also supports administration of its tests by an MSP Institute to students to probe for any effects on the conceptual state of students whose teachers participated in that MSP Institute.

The MOSART team developed, field-tested, analyzed, and profiled items for the grades K–12 physical science content standards and the grades K–12 earth science content standards, including a separate set of tests for K–12 astronomy and space science. Under a separate NSF-funded project, MOSART-Life Science (MOSART-LS), items for the K–8 life science content standards were also developed. (We are currently seeking funds to develop items for the high school life science standards.) If you are a staff member of an NSF MSP, please visit the MOSART site on MSPnet.org to learn more about our program and to request tests. This site provides parallel versions of the full range of tests used with NSF MSPs.