Former Manchester superintendent Brennan diagnosed with cancer
The former school chief "is fighting for his life," said Girard, whose radio show hosted Brennan weekly.
He said Brennan, who is in his mid-60s, is being treated on an outpatient basis.
According to one school employee, people have been contacting the superintendent's office looking to mail cards to Brennan's home.
The Manchester school board selected Brennan for the superintendent post in March 2008, and he started that July. Four years later, Brennan announced his resignation plans and finished his tenure in June 2013.
In an interview with the New Hampshire Union Leader days before he left, Brennan cited extended learning programs as one of the district's most significant successes under his tenure and a reflection of his educational philosophy.