As luck would have it, the grade school I attended had just that year reduced its size from a kindergarten through sixth grade school to a kindergarten through fourth grade school as the result of a then new “middle school” being opened as part of a nineteen-seventies progressive restructuring that took in the fifth and sixth grade students from our grade school as well as two other grade schools in the area. As a result of this, my school ended up with a number of no longer needed classrooms – one of which was a biology lab.