Love Being Right

"In terms of age in years, dictionary definitions generally designate preadolescence as the years from 10 to 13 (ages 10-12 for girls and 11-13 for boys),[4] although there is no exact agreement."
"A blend of between and teen,[5][6] "tween" in this context is generally considered to cover the age range from eight to twelve years."


The above is from
Wikipedia Preteen