Here we go looby loo
the Hokey Pokey

Take the Farmer in the Dell and make it modern.

The principal in the dell
takes the secretary
...takes the teacher
   takes the parent
...takes the student takes the bus

hi ho the derry-oh, the bus stands alone.

A refinement - make the 'job titles' as long as possible

Such as the school secretary takes the administrator in charge of maintenance