To find the cache, which is a small clip lock box secured with magnets, you need to answer the following two questions, and then add the answers to the listed co-ordinates to find the final location. If your answer were 123, you would add 0.123 to the co-ords.
Question 1: There are 7 species of honey bee - how many subspecies are there? Subtract 1 from the answer and add to the northing.
Question 2: On which day in the lifecycle of a honey bee does the bee weigh 3.4mg? Multiply the answer by 11 and add this to the easting.
You can check your answers for this puzzle on GeoChecker.com.
I would avoid Ground Zero around the beginning and end of the school day.