- Saber-Toothed Cat
- Saber-Toothed Cat (Enhanced Edition)
- Saint Louis
- Sakamoto's Swim Club
- Sam Houston: A Fearless Statesman
- Samu és Dani kalandjai
- Samuel de Champlain
- Samuel Morse, That's Who!
- SANDY GROUND TALES SERIES
- Sarah Winnemucca
- Savannah: Hostess City of the South
- Saving American Beach
- Saving Lady Liberty
- Saving the World: The Chocolate Pilot
- Scheherazade Cat: The Story of a War Hero
- School Then and Now
- Schools Past and Present
- Scouting for Girls: Adapted from Girl Guiding
- Second Grade Homeschooling
- Second Grade Social Science
- Second Grade Social Science Activities
- Second Grade Social Science Quizzes
- Seconde Guerre Mondiale
- Secret Agents! Sharks! Ghost Armies!
- Secret Engineer: How Emily Roebling Built the Brooklyn Bridge
- Secret Spy Codes and Messages
- Seeking Freedom
- Seeschlachten und Abenteuer berühmter Seehelden
- Seeschlachten und Abenteuer berühmter Seehelden - Ein Buch der Admirale
- Seis cuentos para educar en disciplina positiva
- Separate Is Never Equal
- Sequoyah and the Written Word
- Sewing Stories: Harriet Powers' Journey from Slave to Artist
- She Persisted
- She Persisted Around the World
- She Persisted: Clara Lemlich
- She Persisted: Claudette Colvin
- She Persisted: Harriet Tubman
- She Persisted: Margaret Chase Smith
- She Persisted: Maria Tallchief
- She Persisted: Nellie Bly
- She Persisted: Oprah Winfrey
- She Persisted: Ruby Bridges
- She Persisted: Sally Ride
- She Persisted: Sonia Sotomayor
- She Persisted: Virginia Apgar
- Shipwrecked!
- Shirley Chisholm
- Siddhartha
- Significant Individuals Pupil Book
- Sigurd fortæller danmarkshistorie
- Sigurd fortæller om Luther
- Simon
- Sinister Savannah
- Sir Edmund Barton: Australia's First Prime Minister: A 15-Minute Biography
- Sister Rosetta Tharpe
- Sitting Bull
- Sky High: George Ferris's Big Wheel
- Slavery
- Slavery and the Coming of the Civil War
- Slavery in America
- Smithsonian Dinosaurs and Other Amazing Creatures from Deep Time
- Snowshoe Thompson
- So Tall Within
- Socrates: Greek Philosopher
- Soldier Of Rome
- Solving the Puzzle Under the Sea
- Someday Is Now
- Solving the Puzzle Under the Sea
- Someday Is Now
- Something to Prove
- Song For A Dark Queen
- SOS: Stories of Survival
- South America
- South Korea
- South Korea (Enhanced Edition)
- Space
- Spanish Missions
- Spies, Lies, and Disguise
- Spooky New Orleans
- Sprouting Wings
- Squanto and the Miracle of Thanksgiving
- Stamp Act Congress
- Stamped
- Stamped (For Kids)
- Stephen Decatur Sinks the Philadelphia
- Stephen F. Austin: The Father of Texas
- Still Marching Strong: Women in Modern America
- Stone Age to Iron Age Pupil Book
- Stonewall: A Building. An Uprising. A Revolution
- Stories for South Asian Supergirls
- Stories from the History of Rome
- Stories of Great Americans for Little Americans
- Sub-Saharan Africa
- Sun
- Susan B. Anthony
- Susan Pyle and the New Madrid Earthquake
- Sweet Justice
- Sweet!
- Swords
- Sybil Ludington's Revolutionary War Story