Your school will have set your Year End date during the Year End process last academic year believing it to be the last day students are in school for registration. Since then, you may have added staff training days to the end of term, which means you can action your Year End a day or more earlier than anticipated. This requires you to change the Year End date in your School Details table. Click on your school name in the top right of your ScholarPack screen (or go to Admin > Config > Core Setup > School), which opens up the School Details table.
Click on Edit, then scroll down to the Year End date to change this. The date entered here will be the date set to start your Year End in Admin > Year End.