Yes.
Dawn Hochsprung tweeted some photographs taken inside and outside the school. Her last post was on December 13, 2012. (Sad, since we know what happened the day after.)
I am not permitted to post a link to her Twitter page. You can easily find it nevertheless.
Edit: I recall seeing some photographs taken at Sandy Hook before the shooting. I cannot locate them at the moment. I do however remember that a fire engine was in one of them.
_________________
"I hate how I spend 99% of my time upset about culture, when life itself is the problem.
Culture just adds insult to injury." - By Smiggles on SBB forum.
Subject: Any photos of the school before the shooting? 
Thu Nov 01, 2018 12:27 pm