The conclusion is a strong endorsement of the Obama administration's approach to improving teaching by implementing new evaluations of teachers that draw on both observations and value-added measures.

When calculating labor productivity, a value-added measure of output should be used to avoid counting other inputs (like purchased materials) as if they were created by the labor and capital applied within the sector.

Results have improved dramatically year-on-year, and the most recent contextual value-added measure places it third in Hertfordshire.

WQEIC has worked with other providers on the development of effective quality assurance systems and self-assessment processes with a particular focus on the use of value-added measures.

The school's value-added measure was 981.9 (national average 1000).

In 2007 the school's value-added measure was 1006.7 (national average 1000).

In comparing software with other manufacturing industries, Nathan Associates employed a value-added measure, which excludes an industry's purchase of other goods used in production.

The school's value-added measure was 1011in 2007(national average 1000).

The school's value-added measure was 1018.2 (national average 1000), for adding value between the end of Key Stage 2 and the end of Key Stage 4.

The 2011 tables will abandon the contextual value-added measure, which attempted to take account of social factors that shaped performance.