Accidents happen, but rest assured I will do my best to help your artist get any potential stains out as soon as they happen. Just in case we don't get it all the way at school, here are some at home cleaning tips for various media!
Tempera Paint or Watercolor Paint
1. Soak the spot in cold water
2. Hand scrub with soap
3. Work area with hands
4. Wash as usual
Ink (other than India Ink)
1. Soak spot in small amount of milk
2. Hand scrub
3. Wash as usual
Permanent Marker or India Ink
These materials contain varnish and require a solvent. Turpentine or paint thinner may work, but marks from these materials may never be entirely removed.
Clay
1. Allow clay to dry
2. Brush dried clay from fabric with a stiff brush
3. Wash in the usual manner
Acrylic Paint
These are permanent and can't be removed once dried.