This could be a fun poster to have posted somewhere in a classroom. You could have students learn to say hello in different languages and have them practice these skills as they enter the classroom in the mornings (make it part of the morning routine-just change language greeting for the day).
Students are born with a powerful desire to learn. Everything we do as parents and teachers must ensure that this powerful desire is kept alive. If there were to be one thing to be continually assessed it would be this desire... too many students leave with little to show for their time at school. Too many leave alienated and powerless.