What can I call other students if I am also a student?
Solution 1:
A schoolmate:
A person who attended school with the subject.
Fellow students is also correct and grammatical.
Solution 2:
You could use peers. This is potentially ambiguous, but depending on the context, it may be obvious to the listener who you mean by peers.
Solution 3:
At my university, professors usually refer to other students as our colleagues and encourage us to do so during presentations and talks.