Abstract (EN):
This paper explores the changes in value added
(VA) of a sample of schools for cohorts of students finishing
secondary education between 2005 and 2008. VA
estimates are based on distance measures obtained from
DEA models. These measures are computed for each pupil
in each school, and evaluate the distance between the
school frontier in a given year and a pooled frontier comprising
all schools analysed. The school VA is then computed
by aggregating the VA scores for the cohort of pupils
attending that school in a given year. The ratio between VA
estimates for two consecutive cohorts, that attended the
school in different years, is taken as the index of VA
change. However, the evolution of school performance
over time should consider not only the movements of the
school frontier, but should also take into account other
effects, such as the proximity of the students to the bestpractices,
represented by the school frontier, observed over
time. For that purpose we developed an enhanced Malmquist
index to evaluate the evolution of school performance
over time. One of the components of the Malmquist index
proposed measures VA change, and the other measures the
ability of all school students to move closer to their own
school best practices over time. The approach developed is
applied to a sample of Portuguese secondary schools.
Language:
English
Type (Professor's evaluation):
Scientific