Vital Signs December 1999 Schools Under Siege By Donald Gruber Ed.D. American public education is under siege, but not by kids with guns, as the somber reporters of the six o'clock news would have us believe. To read the full article, please sign in or create a free account to view Chronicles content for 30 days. Donald Gruber Ed.D. Donald Gruber, Ed.D. has over 20 years of teaching experience in public schools. An executive board member of several state education associations, he received a state-level teaching award in 1996.