Front Office Staff Training/Standards

A school's secretary can make or break a school in many different ways. I've personally seen some not-so-extraordinary administrators made to appear like educational mystics, and other exemplary administrators who got the boot despite outstanding track records and accomplishments in student achievement . . . . all based on the attitude, abilities, and effectiveness of their secretary.
I'm looking for any kind of resources available for developing individuals in this key position: training, consultants, webinars, books, certification programs, anything!
The primary focus of the development I'm seeking is anything related to customer service, problem solving, communication, school climate/culture, conflict resolution, people skills, etc., but anything you could share in any other areas would be appreciated as well.