The Heinie Prize (Rotten School #6) by R.L. Stine

Is Belzer a loser? Just because he wears T-shirts that say I need a Tutor and Ask Me About My Allergies? Just because he picks scabs off his knees and eats them? Belzer's parents think he's a loser. They want to take him out of Rotten School. Every year Mrs. Heinie awards the Heinie Prize to the Most Outstanding Fourth Grader. Bernie Bridges wants Belzer to win the Heinie. Then his parents will have to let him stay. But that spoiled rich kid Sherman Oaks wants to win the Heinie, too. Can Bernie pull off a miracle? Will Belzer be the royal Heinie?

Dog Gone note: This can read as a stand alone, despite it being a part of a series. This book is in excellent condition.