What are you studying?

你学的是什么（专业）？

youdao

What foreign language are you studying?

你学的是哪国语言？

《新英汉大辞典》

I: · What department are you studying in?

I：你在哪个系学习？

youdao

Why are you studying Education?

你为什么学教育？

我的梦想是当教师 - SpeakingMax英语口语达人

And why don't we just start by you introducing yourselves a little bit about like what year you are, where you're from and what you're studying in Princeton.

请两位先做个自我介绍吧,诸如你们读几年级，从何而来，在普林斯顿学什么专业等。

普林斯顿公开课 - 人性课程节选

For example, let's pretend that you are speaking with a friend who had been studying for a test for some time.

例如，我们假设你跟一位朋友在聊天，他已经为一门考试复习了好一段时间。

I'm sure 课堂 - SpeakingMax英语口语达人

Like, if they see that you are studying hard but you're not from here, they'll let you stay here or something.

NPR: Immigrant Students Talk About U.S. Life

"Try to meet with at least 25 people over the course of the summer who are in areas outside of what you are studying, " suggests Rueff, who is also a consultant for the job review website Glassdoor.com.

FORBES: Magazine Article

So, if we know where you went to the high school, where you applied to college, when you got in, what you are studying, then we can bring you scholarships, help you plan your classes, recommend all your required materials and provide them cheaper than anyone else in any format (print, not print, digital, rental, new, used), connect you with students, professors and schools, provide study help and much more.

FORBES: An Interview with Dan Rosensweig of Chegg