sions (end of probationary period, promotion, transfer) and in some cases at periodic
intervals. This serves both to advance the career of the individual teacher and to maintain
the efficiency of the school system. Teaching ability and aptitude are assessed, as
are the teacher's professional competence. Assessment is based on visits to classes by
the head teacher and school inspectors, performance reports by the head teacher on the
teacher concerned, conversations with the teacher and inspection and assessment of
pupils' work.