The Welsh Government grant will help families on low incomes.
Education Secretary Kirsty Williams has earmarked £700,000 of Welsh Government funding to assist families on low incomes with the purchase of school uniform for their children.
The grant is available to pupils in year 7 of maintained schools in Wales who are eligible for free school meals, and to pupils in special schools, special needs resource bases and pupil referral units who are aged 11 at the start of the school year and who are eligible for free school meals.
Cabinet Secretary for Education, Kirsty Williams, said: "Chosen by each school, school uniforms provide students with a school identity; strengthen school and individual spirit and pride -- not unlike the way team kit builds identity, morale and self-esteem.
"Every child can appreciate wearing a school uniform is a powerful rite of passage, and an equally powerful statement of belonging.
"This fund is about making sure everyone in Wales, no matter what their background, has the opportunity to feel their best and thrive at school.
"I remain committed to closing the achievement gap between the pupils from our most deprived communities and those from more prosperous areas."