Learn French: Cet ajustement est utile, vu que la scolarité commence tôt. - This adjustment is useful, seeing that schooling starts early.

While many connectors ending in que require the subjunctive, vu que (seeing that) deals with established, objective facts. Because it points out a concrete reality rather than a doubt or possibility, it is always followed by the indicative.

Could I use étant donné que instead of vu que in this sentence?

Yes, they are interchangeable here and both mean 'given that' or 'seeing that'. The main difference is register: vu que is slightly more informal and conversational, whereas étant donné que sounds a bit more formal.

What is the exact difference between la scolarité and l'école?

L'école usually refers to the physical school building or the general institution. La scolarité refers specifically to the process, duration, or curriculum of schooling. In this sentence, it emphasizes the timeline of a child's education starting early.

Does vu que work the same way as puisque here?

They are very similar, but have slightly different focuses. Puisque (since) assumes the person you are talking to already knows the reason. Vu que draws attention to an observable fact to justify the statement, whether the listener already knows it or not.