It looks like your homeroom is field is a TEXT field in which case it is sorting correctly for a text field.
If this field needs to be a TEXT field (because you might have characters in there) you will need to pad the numbers. Eg
If that field only ever contains numbers and you want it sorted like numbers then the field needs to be of INTEGER datatype. See the attached where the 'Sort' field is an Integer and is sorted ascending to achieve the result you want.
HOWEVER BE WARNED If you change the field to Integer now, any text that might be in there in any jobs will be erased.
If you want to go down this path I suggest you make a new field for future jobs and leave current field alone.