Ernest & Rebecca: The School of Nonsense (Ernest & Rebecca #5)

Now almost seven, Rebecca's feeling better and finally ready to return to school. Believe it or not, she's excited to go back. Her teacher always finds ways to make class fun, turning the place into a school of nonsense. But a zombie-virus, the dreaded flu, is wreaking havoc on the playground. Everyone is going to catch it! Their only hope is the most super microbe of all... Ernest!