This is partly the result of fortuitous geography--Singapore, just a bridge away, broadcasts a variety of programming in Chinese, and with this kind of "extracurricular guidance," naturally the results will be better for the Foom-Yew students.
說來這又得拜地利之賜﹘ ﹘一橋之隔的新加坡，經常播放各種華語電視廣播、節目，寬中學生有了這種「課外輔導」，成果自然較佳。