僱主有冇方法可以查到員工既會考成績?

You have to produce the original School Certificate result for verification and for personnel record at the time when you are being employed. Do you think you could refuse to give it? It is not a matter of human rights nor of a personal privacy if the employer do the check. Frankly speaking, the employer need not go to check the contents of it as School Certificate result means a little for an employer nowaday. It is your attitude to your job and the work you performed will dominated your employment and your advancement.

是有方法查到，
但僱主有無需要這樣做，

因僱主想你入職，
可以用你簽訂的合法同意書在考試局查成績。

這是私隱, 僱主無權亦冇方法可以查到員工既會考成績。