Miss it, miss out (MIMO) sessions have proved successful in preparing students for assessments and developing their knowledge retention. Curriculum Leaders from English, maths and science deliver these revision sessions to ensure Year 9 students have acquired the necessary knowledge, particularly after missing large amounts of learning during Year 7 and Year 8 due to the Covid-19 school closures. The topics are linked to the curriculum, with key words and information provided in a booklet. Teaching Assistants support any students who require additional help in the sessions. The impact of these sessions on increasing students’ retention of key knowledge has been significant. Year 9 students scored 46% higher in their Autumn Knowledge Test compared to the previous Year 9 cohort.