Ann Story found night-zookeeper:

• Significantly improves teaching efficiency and productivity“Kids are learning to write more and enjoying it. We use it as Center Work when I teach small groups and as work for early finishers.”
• Significantly improves behaviour or wellbeing“Keeps kids focused and engaged while I work with small groups”
• Significantly improves attainment“I think most kids by 4th grade dislike writing and think they can't write. NZK has changed that for every student in every class I've taught over past 3 years.”
• Moderately increases student collaboration“They enjoy reading and commenting on each other's work on the BLOG.”
• Significantly reduces attainment gap“Even my struggling writers attempt to write on NZK. I publish ALL work so the at risk kids can still have a voice.”