Teacher’s Assessment and Students' Performance in OCSE-PISA 2009

Many educational works focus on the analysis of teachers' judgment in order to analyze evaluation variability on students with similar ability levels. The aim of this work is to analyze whether teachers of upper secondary schools of the Lombardy region overestimate or underestimate theirs students, exploiting the OCSE-PISA 2009 data. For this purpose a comparison between a teacher's mark and a standardized test has been made in order to identify both overestimated and underestimated groups of students. In particular, this paper focuses on identifying which characteristics of students and schools have an impact on both overestimation and underestimation. Then a multilevel multinomial logistic model has been performed. Also a measure of student's ability taken from a Rasch analysis is considered. The results showed that the factors connected with cultural and socio-economic status seemed to have a major impact on these phenomena