Our school only offered summer school to make up bad grades. There were other options like Florida Virtual or district online programs, but those programs set their own rules and schedules.
I understand the OP was a vent, but she’s being offered more than most, and more than is required. My sister is teaching summer school (4th grade) and it is only for those who qualify for more help (many special need students) and only for 3 weeks. That’s all the program has funding to support.