Can I tellif someone is on my facebook on a different computer?

[kat]

So today I had to go to the office at school cause I was reporting something someone said to me on facebook and my assistant principle had me log onto my facebook using her laptop so she could see it , and I don't if she ever logged out of it... So i was wondering if i can tell if she logged out or not?

[Infamous Krea]

no you cant but you can go into settings and click log out of all devices.

[Angeleyes]

No, there is no way of knowing.

[abraXus]

sure - just check your active sessions - if there is more than one, then she is still logged in

but why on earth would you care so much about something on facebook to actually let your principal see your facebook account?

[john]

There is no way to find out this but you can check your last login detail.