However, it's important to note that "stud" can also have a different meaning, often associated with a physically attractive person, especially a man. This can lead to misunderstandings, so it's best to use "stud" as a short form of "student" with caution.
Other, less common, short forms include:
* stu
* studento (especially in informal contexts)
The best short form for you will depend on the specific situation and your audience.