I'm a few days late on this post, but I couldn't let the passing of Beverly Cleary go unmentioned.
When I was in 4th grade, our teacher, Mrs. Heineke, read a passage to us from "Runaway Ralph" by Beverly Cleary. I was instantly hooked.
By then, I already enjoyed reading, but strictly of shorter children's books like Babar the Elephant, the works of Dr. Seuss, the Berenstain Bears, "Harold and the Purple Crayon", "Where the Wild Things Are", etc. This would be my introduction to "chapter" books.
It helped that the cover was so darn cool. The blazing red cover with a mouse riding hell-bent down a hill, wearing a crash helmet made from half a ping pong ball and a rubber band, whiskers blowing in the wind and his tail carefully tucked under his arm to keep it out of the spokes clinched it. How could I NOT want to read this?