Income deprivation affecting children index (IDACI)

Find out what the income deprivation affecting children index (IDACI) is and how it relates to your school's funding.

Last reviewed on 22 December 2023See updates
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  1. What is the IDACI? 
  2. How does the IDACI relate to school funding? 
  3. Get to grips with the IDACI bands 
  4. Find data for your local areas

What is the IDACI? 

The income deprivation affecting children index (IDACI) measures the proportion of all children aged 0 to 15 living in income deprived families in different local areas (called 'lower-layer super output areas', or LSOAs) across England. Each LSOA has on average 1,500 residents or 650 households. 

Each LSOA gets an IDACI score of between 0 and 1 (for example, a score of 0.38 would mean that 38% of children aged 0 to 15 live in income deprived families in that area). 

LSOAs are then ranked according to their levels of deprivation relative to that of other areas, with 1 being the most deprived. The rankings are divided into 7 'bands' (A to G), with LSOAs in band A being the most deprived (read more about the different bands below).

While the IDACI focuses on children aged 0 to 15 experiencing

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