Meaning of nián jí:
nián jí
年级
Noun
grade; year (in school, college etc); CL:個|个[ge4]
Tā jīnnián zài sì niánjí.
他今年在四年级。
He is in the fourth grade this year.
Wǒ jīnnián dú wǔ niánjí.
我今年读五年级。
I am in the fifth grade this year.
Tā shàng wǔ niánjí.
他上五年级。
He is in the fifth grade.