Description Billy Swift Goes to Space School . Billy Swift is the first human to go to Space School. How will he get along with the other students? Bears on the Brain . Phil has always loved bears. But his mom is starting to get worried. Does Phil have bears on the brain? In Level 11 - Lime, children read with increasing fluency. They will have learned most of the common letter-sound combinations and can read familiar words automatically without needing to sound out and blend.