Bellach mae mwy o ysgolion yn y categorïau gwyrdd a melyn na'r llynedd. Mae angen pedwar diwrnod o gymorth ar ysgolion gwyrdd ac mae ysgolion melyn yn cael hyd at 10 diwrnod.
There are now more schools in the green and yellow categories when compared to last year. Green schools require just four days of support and yellow schools receive up to 10 days of support.