Don't quote me on this, but I think you're okay as long as you're under continuous education...like if you're also going to be enrolled for the next year, then you're still officially a 'student' oveer the summer. My boyfriend & his flatmates never paid council tax the whole time they were at uni, summer or no. Now if you were there for a year abroad,your term ended in May/June and THEN you stayed for summer work, you might be liable for council tax, similar to people who were forced to pay for time before their term started. I would ask your local authority...are you in a student-only house? They might never notice to bill you for CT if no one else is paying and they are all continuous enrolled.