Steiner preschool also entrusts children with knives to cut fruit (or at least mine did, back in the 90s). I would trust 5-7 year olds with knives unsupervised

Steiner preschool also entrusts children with knives to cut fruit (or at least mine did, back in the 90s). I would trust 5-7 year olds with knives unsupervised or semi-supervised more than 8-11 year olds and definitely more than 13-15 year olds!