It's hard enough on a parent to find out that their child has been bullied, but then to find that the school isn't willing to follow through with helping to end it, is even more frustrating.  If you don't feel that the school counselor has helped the situation, the next best step is to talk to the principal. Call and set up a specific time when you can meet with them one on one.  Don't just catch them in the hall after school gets out one day.  
 
Before your meeting with them, document everything that has occured, including your attempt at intervention with the school counselor.  Also included should be a written description from your child of the of the bullying they've experienced.  You're more likely to get a positive response from the principal if your approach toward him is of concern for your child and their bullying policies, rather than accusing him or the counselor of not caring.
 
After you have talked to the principal give it some time for things to begin to change.  If you don't see any measurable change it may be time to take the problem to a higher level such as the superintendant of schools or the school board.  
 
Good Luck!
Boys Town National Hotline
1-800-448-3000