tā / de / chéng / jì / pái / zài / bān / jí / shí / fēn / wèi / shù / de / qián / bǎi / fēn / zhī / shí / , / biǎo / xiàn / fēi / cháng / yōu / xiù / .

他的成绩排在班级十分位数的前百分之十，表现非常优秀。

His grades rank in the top 10% of the class decile, showing excellent performance.