Translation of "Distinctions" in Spanish

He advocated abolishing class distinctions.

Abogó por abolir la distinción de clases.

Students who received prizes and high distinctions

Los estudiantes premiados y con grandes distinciones

I still make distinctions between people of course,

Sigo, por supuesto, calificando...

There's no need of making such fine distinctions.

No hace falta hacer distinciones tan sutiles.