Williams, 38, whose wife Ayda Field gave birth to Theodora last month, said he is hugely impressed by privately educated children, reported Daily Mirror.
"I think aristo kids are well grounded, they're smart and naughty and have original thoughts. I don't meet many aristo kids who aren't well mannered," he said.
The multi-millionaire singer also revealed he is still prudent with cash and said he refused wife's plans for an Alice In Wonderland-style baby shower because it was "too expensive".
