Scholastic has broken down the past month’s bestsellers based on purchases made through its US network of in-school Book Clubs. Read on for the top-five picture books, transitional readers, early chapter books, chapter books, middle grade, young adult and non-fiction from March-April 2011.

The top-five picture books:

1.  Happy Easter, Mouse! by Laura Numeroff
2. The Night Before Mother’s Day by Natasha Wing
3. The Best Easter Eggs Ever! by Jerry Smath
4. Sitting Duck by Jackie Urbanovic
5. Looking for Easter by Dori Chaconas

The top-five books for transitional readers:

1. SpongeBob SquarePants®: The Best Mom
2. Rio: Learning to Fly
3. The Berenstain Bears®: All Aboard! by Jan and Stan Berenstain
4.  Disney Princess: Beautiful Brides
5. Monster Trucks! by Susan E. Goodman

The top-five early chapter books:

1. Ellie the Homesick Puppy by Holly Webb
2. Hop: The Chapter Book
3. Joe and Sparky Get New Wheels by Jamie Michalak
4. Roscoe Riley Rules #1: Never Glue Your Friends to Chairs by Katherine Applegate
5. Kitty Corner: Otis by Ellen Miles

The top-five chapter books:

1. Titanic Book One: Unsinkable by Gordon Korman
2. Poison Apple: Her Evil Twin by Mimi McCoy
3. Diary of a Wimpy Kid #2: Rodrick Rules by Jeff Kinney
4. Cupcake Diaries: The Cupcake Cure by Coco Simon
5. Goddess Girls: Artemis the Brave by Joan Holub and Suzanne Williams

The top-five middle grade books:

1. Old Yeller by Fred Gipson
2. Mockingbird by Kathryn Erskine
3. Notes from the Dog by Gary Paulsen
4. The Last Invisible Boy by Evan Kuhlman
5. Love, Aubrey by Suzanne LaFleur

The top-five young adult books:

1. Anne Frank: The Diary of a Young Girl
2. Witch & Wizard by James Patterson
3. Tears of a Tiger by Sharon M. Draper
4. Words in the Dust by Trent Reedy
5. The Forest of Hands and Teeth by Carrie Ryan

The top-five in non-fiction:

1. Diary of a Wimpy Kid: Movie Diary, Edition 2 by Jeff Kinney
2. Bugs A to Z
3. 3-D Thrillers! Big Cats and Ferocious Jungle Animals
4. National Geographic Kids: Weird but True! 2
5. 3-D: Under the Sea by Seymour Simon

Special Section for April: National Poetry Month

1. I’m Still Here in the Bathtub by Alan Katz
2. Me I Am! by Jack Prelutsky
3. Miles of Smiles edited by Bruce Lansky
4. How to Write Haiku by Paul Janeczko
5. My Hippo Has the Hiccups Pack by Kenn Nesbitt

Visit Scholastic’s Book Talk for more information about the monthly bestsellers list.