I'm not sure about the last sentence. India had a literacy rate of 16% when the British left and education was monopolized by non-Dalits/SC/STs AFAIK. Do you have numbers?
Violence against the dalits is much worst than when the British was running the show. At least during the Raj times, a dalit can reasonably count on the British to deliver justice when the higher caste rape or kill their family members. Nowadays if a dalit dare to speak up or go to a police more violence will descend upon them. Passing a law here or there for show or having a tribal as president is nothing when the culture is caste ridden. You can't legislate morality is what I am saying.
I avoid speaking here since this is an American website and I don't expect them to be educated about non American things. But you are just making shit up and I would like to know your motives behind it.
The leaps and bounds of improvement in lives of lower caste people is one of the primary reason why casteism is not going away. Unlike racism, anyone can claim to be of any caste and there is literal riots happening to be classified as lower caste so that people can claim the benefit. As I said, I don't plan to start an argument here but you are lying and you should tell us why.
India's HDI (Human Development Index) is worse than half of sub-Sahara African countries. Who bear the brunt of this dire statistics? The higher caste or the dalits and the adivasis? India should spend money on this vulnerable people but the Modi government is talking of spending money to dress up the capital or other vanity projects. When confront Indian will readily cite they have a dalit president or this or that to address Western sensibilities but the ground reality is that Indian's caste culture hasn't changed. And that is the problem.