In both maintained nursery schools and nursery classes attached to primary schools, the ratio for three- to five-year-old children should be 2:26, or 1:24 where the headteacher also teaches.

BBC: Nursery

Net Enrollment Ratio in primary education had increased from 58% in 1999 to 76% by 2010 and the Gender parity index from 0.85 to 0.93 over the same period of time.

UNESCO: EDUCATION

Mr da Silva, likewise, could keep reiterating a recent pledge to maintain a sufficient primary surplus to stabilise the government-debt ratio.

ECONOMIST: Brazil