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).
secondary school - a school for students intermediate between elementary school and college; usually grades 9 to 12. Gymnasium, lycee, lyceum, middle school. school - an educational institution; the school was founded in 1900. academy - a secondary school (usually private) trade school, vocational school - a secondary school teaching the skilled trades.