This document summarizes a research paper on maintaining the Malay medium of instruction policy in Malaysia's educational system. It discusses how Malaysia adopted the British colonial education system after independence but has since converted all schools and universities to use Malay as the primary language of instruction. The transition took over 25 years to fully implement. Research found that using Malay as the medium of instruction has not hindered education and Malaysia has developed terminologies and expertise in many fields like medicine and science during this period, showing the viability of Malay for higher education. The paper argues this policy supports national integration and identity in Malaysia's multiethnic society.