Most textile recycling programmes and thrift shops do NOT welcome school uniforms because they are only of interest to a very small community.
Blue Bins & Chutes
All textiles are welcome in these bins.
Cloop Life Line Bins
Tips & Suggestions
Some schools have programs where they take back old uniforms to give to lower income students. Check with your school.
If you can return uniforms to your school, this is absolutely the best way to get them reused.
Freecycle / Give Away
Is the uniform still wearable? Offer it online.