The Learner Profile (LP) frames International Baccalaureate (IB) learning outcomes across the three programme levels and, as such, plays a key role in measuring the success of the rapidly growing number of IB schools in the Asia-Pacific Region. Our aim was to develop an instrument to measure the IBLP and validate the instrument through a series of…

Presented at the Annual National Council on Measurement in Education (NCME) in New York in March 2008. This presentation explores how different item weighting can affect the effective weights, validity coefficents and test reliability of composite scores among test takers.