During the British colonial era, schools used English as the medium of instruction. This continued after independence in 1957 and many English teachers either came from the United Kingdom or were trained there. "In the 1960s, one of the books read and discussed in English classes by sixteen-year-olds was George Orwell's "Animal Farm", recalled Andrew Yip, 60, a shopkeeper in Ipoh, Perak. In 1970, the Malaysian government began requiring all state-funded schools to use Malay to teach, to build nationalism; though English remained a compulsory subject. Many English teachers were phased out. Over the years, students' academic performances declined.