There have been huge leaps in advancement in education in the world today, and a huge amount of money and manpower is being spent on trying to do even more. Education in India is unequal depending on the area of the child, but the advances in technology allowing people to become richer will lead to higher levels of education.
Yes, we will be able to set up analogue solutions to rural India's education system that are cost effective, because analogue is not that expensive. Analogue has been a useful solution all over the United States and other parts of the world. There is no reason that this technology cannot provide the same opportunities in rural India.
Although it is possible to implement a analogous educational system in rural India within a reasonable budget, the longterm maintenance of such programs eliminate any possibility for them to be cost effective. Schools are generally supported governments, which entails taxing people for educational expenses. The majority of Indian people simply do not have the money to sustain a complex and increasingly technology based educational system over a long period of time.
We will not be able to set up analogue solutions to rural India's educational system that will be cost effective. Any solution to the educational system in India is going to need a lot of funding at the beginning to get it up and working. It will be years before we begin to see the positive benefits and profit from setting this up but it needs to be done.
There are no reasons why rural India can have digital solutions in place instead of analogue ones. Companies can install simple solar panels, wireless towers and satellite dishes to connect rural areas to digital networks for a markedly improved education system. An analogue system would be more expensive simply because that technology is outdated and fewer people know how to run those systems nowadays.