For example:

When I was a freshman, I was an excellent health Commissioner.

Sophomore won the fifth place in the class debate.

Junior was named one of the outstanding members of the Student Union.

In my senior year, I won the n th place in the simulated work competition.

And so on.

But it's better to keep a low profile when writing. Now I open a resume that says "President of the Student Union", and then I open it and find that it is "President of the Student Union (1)". A little hasty.