An airplane can travel at a speed of 400kmph to 9000kmph.
Brazil has recently gone through changes in school grades. Currently, at the age of 6 children attend from the grade 1 to 4 what is called Ensino PrimÃ¡rio (Portuguese for Primary Teaching, or Primary School), and afterwards from grade 5 to 9 the Ensino Fundamental (Fundamental Teaching/School).
Year 1 is the first year of primary school after Reception. The first year of secondary school (the old first form) is now known as Year 7. The Lower Sixth is now Year 12 and the Upper Sixth is Year 13. However, the term Sixth Form has still been retained as a vestige of the old system and is used as a collective term for years 12 and 13. Public (fee-charging) schools, together with a few state schools, tend to use the old system of numbering.