-- The top
quintile (top 20 per cent) saw their family income grow by 27 per cent during that time (average after - tax, after - transfer family income of $ 135,500), compared to 14 per cent for the second - highest
quintile (after - tax family income of $ 73,500), nine per cent for the second - lowest
quintile ($ 32,700) and 16 per cent for the
bottom one -
fifth of income earners (after - tax income of $ 14,600)
Numbers Matter, an instructional plan developed by Barbara Burke, was first implemented in a school with 100 % free lunch, an on - time graduation rate under 70 %, 95 % of freshman students arriving behind grade level, and state test scores in the
bottom half of the
fifth quintile.