He is deeply interested in social issues.

My younger brother is attending a middle education school.

He is working at a school as a student teacher.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

I am very interested in sociolinguistics.

He is studying the history of National Socialism.

He deeply believed in the principles of state socialism.

He deeply believes in the principles of state socialism.

He was opposed to the principles of National Socialism.

Ethnic socialism is known as a synonym for Nazism.