Jan Berenstain & Stan Berenstain 
Berenstain Bears Chapter Book: Accept No Substitutes 

When Brother Bear’s teacher is away, all of the cubs in class decide that it’s more fun to spend the day playing pranks on the substitute teacher than doing work! But when the pranks get to be more and more troublesome, Brother finds himself in a sticky situation. Will Brother be able to stop the big prank and save the substitute before it’s too late?