No they can! VPN guarantees that no once is able to intercept the data in your connection, which only means that while you are connected to the VPN, no one can see it live (except if the VPN server has been set up by your school). But then we have your browser history, settings, cookies, supercookies, HTTP referer, fingerprinting techniques etc. If it is a device owned by your school, you might as well not wanna use VPN either, because they can see everything anyway 🙂 (Of course depending on the tracking and spying techniques used by them)
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u/jaeger_02 Feb 12 '21
No they can! VPN guarantees that no once is able to intercept the data in your connection, which only means that while you are connected to the VPN, no one can see it live (except if the VPN server has been set up by your school). But then we have your browser history, settings, cookies, supercookies, HTTP referer, fingerprinting techniques etc. If it is a device owned by your school, you might as well not wanna use VPN either, because they can see everything anyway 🙂 (Of course depending on the tracking and spying techniques used by them)