How to get best mark for each Student

I can't find a solution although it should be easy one.

I have some students and all I need is to get the highest mark of each one in Math.

TableName: Students.
Columns:
Name Mark
John 90
John 84
John 92
John 60
Yan  75
Yan  88
Yan  60

I want to get this results:

Name Mark
John 92
Yan  88

I have tried to do top 1, but it gives me only one student. I need to do somehow top 1 on each student, but I don't know how to do that.

Please help me to figure it out.

Thanks in advance.