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    Size charts Oct 15, 2026 4 min read

    School Uniform Size Chart

    Uniforms sized by age band from kid 4 through adult 18. Polo + pant + blazer + skirt all use same age-keyed sizing.

    The Chart

    AgeSizeChestWaistHeight
    4-5XS / 423"21"42-46"
    6-7S / 624"22"46-50"
    7-8S / 725"22.5"50-54"
    9-10M / 1027"23.5"54-58"
    11-12L / 1230"25"58-61"
    13-14XL / 1433"27"61-64"
    15-16Adult S36"30"64-67"
    17-18Adult M39"32"67-70"

    FAQs

    Order true size or up?

    True for short-term wear (final year of size). Up 1 if buying for the school year — kids grow 2-4 inches per year. Hem pants, take in waist if needed.

    Boys vs girls uniform sizing?

    Polos and shirts often unisex through grade 8. Pants and skirts gender-specific. Blazers rarely differ until adult sizes.

    Need this on your store?

    Tailor Size Guide ships pre-built size charts for Shopify.