"OK folks, read over the information on the screen... then I'll remove it and we'll have a short quiz."

This screen is simply mounted too low, and other people block your view of the image.
As long as the major content was a talking head, it didn't matter too much. But now with greater text and graphic content in video images, you need to be able to see the whole image or you'll crane your neck and still miss something that is important.

This means that architects and space planners need to keep ceilings
at least 11 ft high at the front of the room, with screens as high as possible. A screen with a 5ft. vertical dimension can then have its bottom edge high enough to give a clear path over heads (6ft above the floor).

-Note: The larger a room is, the larger the screen must be to allow web text to be read in the rear seats, thus a screen will need to have a larger vertical dimension... and the ceiling will need to be higher than 11ft just to maintain the bottom of the image at 6ft above the floor.

Related topics:

Position ceiling-mount video projectors CAREFULLY

Be careful about "viewing angles"

Were you planning to only use monitors in your classroom... to view web stuff?

Here are the projection distances required for transparency projectors

Raising a portion of the ceiling for screens

Raisin' the ceiling - a view during construction

How to keep rich dark colors in video images

Using a lighting "scene controller" in today's classrooms

Have a question about classroom design, or a good idea? E-mail: