英文表达年级的问题

小学三年级二班：Second class in third grade of primary school

初中三年级二班：Second class in third grade of junior high school

高中三年级二班：Second class in third grade of high school

大学三年级二班：Second class in third grade of university

小学三年级二班:Grade 3,class 2 of primary school
初中三年级二班:Grade 3,class 2 of junior middle school
高中三年级二班:Grade 3,class 2 of junior middle school
大学三年级二班:Grade 3,class 2 of university

i am studying in Grade 3,class 2 at ** primary school.
我在某某小学三年级二班读书

the third grade, second class, second class third-year junior high school, high school third grade, second class, second class third-year university,

你好!
小学三年级二班:In the school third grade second class
初中三年级二班:In the middle school third grade second class
高中三年级二班:In the senior high school third grade second class
大学三年级二班:In the university school third grade second class

小学三年级二班:in primary school Class Two Grade Three
初中三年级二