It's really sad to see the Western schools putting this idea into the Muslim countries especially a country like Malaysia. WhatWhat I recommend is to talk with them regarding school work at the classroom when others are around and nothing else about personal life. Lower your gaze as much as possible and keep your distance. Never be alone with any of the girls because it will eventually lead to Zina. If you have difficulty, try fasting or get married if you are legally able to do so. There should be other schools in such a populated country like Malaysia that have boys and girls separate from each other. Here
Here is a website to help you out brother http://islamhouse.com/en/fatwa/189684/ and it is entitled "Dealing with temptations of women." I make dua that Allah helps you with this type of fitna. Asalamaleikum