This is not accurate. This was never debated in British schools. I am sure Eisenhower said what is quoted but the issue about UK schools is incorrect. I would like to see where the original post came from. If it something like the EDL or BF then they are far right groups who make things up. In addition, I don't know one Muslim who rejects that the holocaust happened.
No. We are not going to change history because the truth makes you uncomfortable. Not anymore than we already do, anyway.