Jodi Hill found night-zookeeper:

• Significantly improves teaching efficiency and productivity“Conferencing with students about their writing is simpler and can be done with minimum interruption to the class.”
• Moderately improves behaviour or wellbeing“Students reluctant to write enjoy using the gamification aspects of Night Zookeeper.”
• Significantly improves attainment“The feedback from peers and teachers is more likely to be read than that when it is in a book.”
• Moderately increases student collaboration“We offer opportunities for students to work together and collaborate on writing.”
• Slightly reduces attainment gap“Have not measured this to be able to comment. ”