are we going too far, too fast, in sex education at schools?

The Ontario new sex curriculum in Canada exposes kids at age 10-11 to concepts such as oral and anal sex. Speaking about puberty and private parts is fine but children sexually mature at different rates. Are we going too far in the name of safety? Many children may not even understand or comprehend certain concepts until a later age. Should sex education be more customized? Can this be more damaging than helpful?