Once you live here long enough and get to know friends and acquintances from different races you'll be multi lingual too. As long as you dare to make friends outside of your own race, you'll learn to communicate using different languages.
These schools are for the very rich. Dont even think of sending your children there if your house hold income is anything less than RM50k a month. And then after which, a huge sum for another 4 years oversea U....