In the New Zealand education system, decile is a key measure of socioeconomic status used to target funding and support schools. In academic contexts the full term "socioeconomic decile" or "socioeconomic decile band" may be used. A school's decile indicates the extent to which the school draws its students from low socioeconomic communities. Decile 1 schools are the 10% of schools with the highest proportion of students from low socio-economic communities. This system was implemented in 1995. Its exact nature has changed since then.