Report
                        
                        Harmon, Maryellen, Teresa A Smith, Michael O Martin, Dana L Kelly, Albert E Beaton, Ina V Mullis, Eugenio J Gonzalez, and Graham  Orpwood.  
Performance assessment in IEA's Third International Mathematics and Science Study (TIMSS). Chestnut Hill, MA:  International Study Center, Boston College, 1997.