Identify the specified age of the children in each group using this formula:
  (1) List all of the children in the group in order of their ages from youngest to oldest. Children younger than 24 months should be listed by their age in months. Children two years and older are listed by their age in years.
  (2) Determine the total number of children in the group and divide this number by two. If the result is not a whole number but is .5, such as 6.5, round up to the next number, which is 7. This will be the core number of the group.
  (3) Begin counting at the first or youngest child on your list and count down the list from youngest to oldest, until you reach the core number. The age of this child is the specified age of the children in this group.

Source Note: The provisions of this §746.1603 adopted to be effective September 1, 2003, 28 TexReg 1402; transferred effective March 9, 2018, as published in the Texas Register February 16, 2018, 43 TexReg 909