See the picture. Read the clue. Play I Spy. It's fun to do! Join the Scholastic Reading Circle-children will love to read together, read with assistance, and read alone! Level 1 Simple words and short sentences for the newest readers Level 2 Vocabulary and sentence length for beginning readers Level 3 Longer stories with paragraphs Level 4 First chapter books for advanced beginners.Marzollo, Jean is the author of 'I Spy a School Bus Level 1', published 2003 under ISBN 9780439524735 and ISBN 0439524733.