Cannot view Github classroom in an iframe

I am trying to integrate our LMS with Github classroom [using LTI] (Connect a learning management system to GitHub Classroom - GitHub Docs) and trying to display Github classroom in an iframe within the LMS.

LTI Launch request is successful.

Request

Request URL: https://classroom.github.com/auth/lti/launch
Request Method: POST
Status Code: 200 

Body

But when we try to embed within an iframe , we are getting following error.

Refused to display 'https://classroom.github.com/' in a frame because it set 'X-Frame-Options' to 'sameorigin'.

Is there any setting on Githuib classroom to make it embeddable ?