If you use Google services like Drive for homeschooling you can now easily monitor what devices have accessed your account recently.
Google has recently added a Devices and Activity dashboard that allows you to see what devices are currently accessing your account and when devices have accessed your account previously.
A new Devices and Activity dashboard gives your users additional insight over the devices accessing their Google account. The page shows a comprehensive view of all devices that have been active on an account in the last 28 days, or are currently signed in. And in case any suspicious activity is noticed, there’s a setting to immediately take steps to secure an account and change a password.
You can read more about this and other new features at the Google Apps Update Blog.