Most writing on this topic is either affiliate spam or wishful thinking. These are straight explanations of how school filtering actually works and what does and doesn't get past it — including the cases where the honest answer is "this won't work for you".
The four techniques school filters use to find VPNs, why famous providers are the easiest to block, and what has to be different about traffic for it to get through. Read →
Choosing one that'll actually work, setup for iPhone, Android, Windows and Mac, verifying your traffic is really tunnelled, and fixing it when it breaks. Read →
Why free VPNs rarely get through a filter, what security audits keep finding in them, and the two genuinely trustworthy free options — plus why they still won't help at school. Read →
Usually no. Why managed devices block installs, why device-level monitoring means a VPN wouldn't help anyway, and what people do instead. Read →
HyperTunnel is one link you paste into a free app. Reality protocol, Sydney servers, works on any phone or laptop, about two minutes to set up. 3-day refund if it doesn't get through on your network.