Chrome Browser Lockdown is a free add-on developed by Castle Learning for the Chrome platform. This tool falls under the category of Browsers and is specifically designed as an add-on for educational purposes. Its primary function is to restrict students' access to new tabs while they are completing assignments or assessments in Castle Learning.

When a teacher or administrator assigns an assignment or assessment in Castle Learning, they have the option to enable Browser Lockdown. If this option is enabled and the Chrome Browser Lockdown extension is installed on the student's device, it will automatically close all other tabs and prevent the student from opening new tabs or browser windows.

This add-on ensures that students remain focused on their assignments without the distractions of other websites or applications. By limiting their access to additional tabs, it promotes a more controlled and secure learning environment. Chrome Browser Lockdown provides teachers and administrators with an effective tool to enhance students' concentration and minimize the temptation to navigate away from the task at hand.