Eligible sizes

21st March 1997, 12:00am
In the primary school tables, of those with 100 per cent of pupils achieving level 4 in the core subjects, the average number of pupils eligible was 17. Only three of those with this score had more than 20 eligible pupils. Statistically significant?

COLIN OXLEY

Brentwood School Timperley Altrincham, Cheshire