As point out in the comments, scholaris is an adjective meaning "belonging to a school" or "of school".
If you say opus scholare, vox scholaris, it means "work of school, voice of school".
To me that sounds essentially opposite of what you want to say, so I would not suggest it.
Notice in my example above that opus is a neuter and therefore the adjective is in the form scholare.
To reach the correct tone, I strongly suggest that you pick some Latin dictionary (you can find suggestions in this other question) and find the words you wish to use.
We can then help you use them.
Let me give you some suggestions (see more detailed translations and more suggestions in a dictionary):
- Work might be labor (physical work), opus (a piece of work), facta (made things), acta (done things) or scripta (written things).
- A student might be studens, studiosus or discipulus.
- A voice might be vox or dicta (said things).
If you want to use participles, just look up the verbs that are relevant (study, do, say, write, or something) and we'll figure out suitable forms for them.
For example, studens comes from the verb studere (or studeo in some dictionaries), which means much more than studying.
My best guess now is scripta studentium, dicta studentium "things written by students, things said by students".
I'm happy to give a better suggestion if you can comment on the tone of these words and perhaps suggest better ones (see a dictionary for both).