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).
Villages and hamlets throughout the country have such schools. By 1970, there were approximately 2,000 primary schools for 35 percent of primary school aged youth. About 12 percent of all primary school students attended private, predominantly church run schools.