In the class details area the number of teachers must be recorded against each class and should be greater than or equal to zero and less than 6 for primary and all through schools or less than 5 for middle deemed primary or secondary schools.
To amend this go to Admin > Census > Spring > Class details and click the little pencil in the actions column at the end of the class you need to edit.
Once you have updated the teacher numbers ensure to click the little tick in the action to save:
If the information recorded for the teacher numbers is correct and this query shows you can annotate this query when uploading the census on collect.