The first book in the Liberty Falls Elementary series! Class 507 is so terrible that when a science experiment goes disastrously wrong, their teacher quits in the middle of the lesson. But through a mix-up, the school office never finds out. Can these fifth graders keep it a secret? Or will the greatest school year ever turn into the worst disaster in school history?
“Aimed equally at boys and girls, this engaging comedy offers some life lessons with a giggle.” – Kirkus Reviews
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