On Start the Week Andrew Marr explores the use of technology in education. Professor Sugata Mitra has installed an internet-connected PC in a slum in India and watched how curiosity leads children to learn together. Digital technology is increasingly used in schools but the educationalist Neil Selwyn questions whether this is a positive step. The writer Lynsey Hanley looks at how class is embedded in the education system and the former Headmaster at Eton, Tony Little, on his vision for the future of schooling.