Teachers block QuackPrep not because they hate test prep, but because the "Free Play" mode has multi-player racing features that become distracting during lectures.

However, because these sites often host their own scripts, run on non-standard ports, or exist on domains not whitelisted by school districts, they are frequently flagged by security filters.

Some browsers (like Opera or Chrome with an extension) offer built-in translation proxies. When you activate "Translate to English," the browser sometimes reroutes traffic through a proxy server that the school firewall does not recognize. This works best for reading text-based prep material.