Yes, Judge Hughes may appear and be identified as a judge. The comments the judge makes should be based on personal experiences and observations.

The judge’s appearance does not fall under Canon 2(B) which prohibits a judicial officer from using the prestige of the office to advance the private interest of others.

Judges are permitted to contribute to the improvement of the legal system and the administration of justice by assisting law schools in recruiting the most qualified individuals to the legal profession.
(Opinion 96-6)