Intervention Friday is part of the district's ongoing efforts to try and ensure all students are successful. Teachers dig into student data, look at potential gaps in student learning, and discuss ways to address those gaps by changing instruction or offering interventions to students. All D91 elementary schools will be released an hour earlier than normal on Fridays. D91 middle schools and high schools will have a half day for students with a grade below a C or if they have an "i" (an invitation) on Fridays. Please contact your school with any questions about D91's Intervention Friday.