Looking on the internet deeply has found these results:

at the front of the room is the most popular phrase on the web.

in front of the room 10 results on the web	at the front of the room 191,900 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Oct 8, 2013 ... I'm in the front of the bus. (In the front part of it.) He's at the front of the line. He's at the front of the room. Opposite would be he's at the back of ... Mar 9, 2015 ... When the desk is at the front of the room, some students may feel ashamed to walk up to the teacher's desk because all of the other students ... May 12, 2010 ... Our goal will be to identify the elements at the front of the room that must be considered, understood, and prioritized, in order to create an ... Apr 7, 2015 ... ... specifically addressing the power of being the convener if not the presenting expert, thought leader, and/or innovator at the front of the room.

in front of the room

10 results on the web

at the front of the room

191,900 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Oct 8, 2013 ... I'm in the front of the bus. (In the front part of it.) He's at the front of the line. He's at the front of the room. Opposite would be he's at the back of ...
Mar 9, 2015 ... When the desk is at the front of the room, some students may feel ashamed to walk up to the teacher's desk because all of the other students ...
May 12, 2010 ... Our goal will be to identify the elements at the front of the room that must be considered, understood, and prioritized, in order to create an ...
Apr 7, 2015 ... ... specifically addressing the power of being the convener if not the presenting expert, thought leader, and/or innovator at the front of the room.