Horrible Harry and the Green Slime by Suzy Kline illustrated by Frank Remkiewicz*

My second grader enjoys this series.
He read it to himself.  He said each chapter was a different story.  His favorite one was the "slime one".  The kids had to demonstrate something.  The principal attended and was a good sport as the narrator spiked his hair!
Great series for reluctant readers.
*Highly recommend.
Guided Reading Level: L (end of second grade)
Grade Level Equivalent: 3.3