Kids are often given several textbooks to take home, so the kid that must use a computer be allowed to take it home, or the school MUST provide a like one. Times 7 textbooks per 20-30 per each class kids and figure the cost of textbooks, if you are to compare, then compare appropriately. You can not compare one textbook per one child per one computer. Of course this makes it appear outrageous. Each case is Individually decided.
Schools can offer Extended DAY classes, and allow the child time to do it there, if it is an issue.
Also a school can provide Extended Summer Year Services. They can do Saturday School. It is whatever is necessary for that child to receive a FAPE in the least restrictive environment, based on individual needs, not the needs, concerns of the district. Provide it, says Federal law, in whatever way they can. Let the schools search for organizations and tell the parents.