Hey! I’ve been using Hola VPN as a free unblocker url proxy for chromebook. It’s not exactly a proxy, but it works similarly and unblocks most sites. Just install the extension from the Chrome Web Store, and you’re good to go.
For staying under the radar, avoid logging into personal accounts while using it. Schools might flag that kind of activity.
For staying under the radar, avoid logging into personal accounts while using it. Schools might flag that kind of activity.