In almost any other case I would agree with you. However, we all know that government moves like pond water; very slowly, if at all. Kids in school don't have that much time. They need to learn all they can in a relatively very short period of time. Waiting for government is not an option when it comes to a child's education as far as I'm concerned. Actually, this situation illustrates perfectly why I am very much against government provided public education.
The geography unit is 6 weeks, not the entire year. He could legally put up the display during the geography unit... The law says there can not be a *permanent* display.