Parents and pupils have marched from Cwmcarn Village to Cwmcarn High School today to show support for the school.
The site shut last year after abestos was found.
Parents and pupils have told ITV News that they are worried about its future.
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Many places will be dry overnight with lengthy clear spells which will allow it to become chilly compared with recent nights.
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The charity has warned that 'well-meaning' members of the public could cause the dolphins further harm.