a higher mark/higher marks

[Tan Elaine]

If I score 70% in maths and my classmate 80%, do I say

1. He scored a higher mark in maths than I did. OR
2. He scored higher marks in maths than I did.

Thanks in advance.

 

[bhaisahab]

If I score 70% in maths and my classmate 80%, do I say

1. He scored a higher mark in maths than I did. OR
2. He scored higher marks in maths than I did.

Thanks in advance.

Both are used.