Japanese class

I take a Japanese class on Tuesday.

someone may ask me,
"Why do you take Japanese class?"

I would say,
"because I'm a foreign student"

in today's class, I learned a setence pattern and read the 'NIHONNO RONTEM' , which is the
best book for a person who want to know about current events, economy, the world situation , etc.,

I didn't know why a foreign student must take a Japanese class before.
but now I feel that I'm not good at Japanese and I can improve my Japanese ability from Japanese class.

but.. It's difficult.... TT