When you’re in the 教室 (classroom)，you’ll need your basics like your 铅笔 (pencil), 笔 (pen), and 笔记本 (notebook), all set out on your 桌子 (desk).  The 老师 (teacher) will write something on the 黑板 (blackboard) using a piece of 粉笔 (chalk) likely instructing you which pages in your 课本 (textbook) you’ll need.  If you’re sharing a desk with a 同学 (classmate), then it is likely you’ll have a 三八线 (“38th parallel” in reference to the border between the Koreas) in between the two of you.  What do other places call the shared line on desks?

教室 jiao4shi4 classroom
铅笔　qian1bi3 pencil
笔　　bi3 pen
笔记本　bi3ji4ben3 notebook
桌子　zhuo1zi desk
黑板　hei1ban3 blackboard
老师　lao3shi1 teacher
粉笔　fen3(2)bi3 chalk
课本　ke4ben3 textbook
同学　tong2xue2 classmate
三八线 san1ba1xian4 38th parallel