Hang in there and see if you can’t interest a few grandparents in tutoring some of the children. My 12-year old grandson failed Math 3 years in a row in AR and was dangerously close to failing English, also. When his mother requested that he be retained in 6th grade, we had to battle the teachers whose attitude was, “well after all, he’s only failing one subject”. We succeeded in having him retained and I enrolled him in school here in AL. After we resolved some of his glaringly apparent behaviorial issues, and with some tutoring from my husband and myself, he ended the 2007-2008 school year as an Honor Roll student and he passed Math for the first time in 3 years.
Someday, your grandson will rise up and call you and you husband “Blessed”!