To keep the reward, accredited teachers must be practising classroom teachers in either a municipal or a private subsidised school and be rated as “Outstanding” or “Competent” by the teacher performance evaluation system during the corresponding period. In recent years, most applicants were teachers based in the private subsidised sector. In addition, reflecting the high standards of the programme, since 2008 less than one in five applicants successfully achieves the accreditation of excellence. The SNED is organised every two years and covers the subsidised sector, i.e. municipal schools, private subsidised schools and schools with delegated administration.