成绩以持续评估为准。用英语怎么说？

成绩以持续评估为准。

Examination is by continuous assessment.

examination

n. 检查，考试，询问，审问；

例句
There will be a written examination to complement the practical test...
会有笔试作为实践考试的补充。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

continuous

adj. 连续的，延伸的，不断的，遍布的；

例句
The balance continues to swing away from final examinations to continuous assessment.
期末考试渐渐被连续性评估所取代。

assessment

n. 评估，评价，（应偿付金额的）估定，（为征税对财产所作的）估价；

例句
I think it may take sometime before we can have an accurate assessment of the damage...
我认为我们对损失作出准确的估算可能需要一段时间。