Lots of things tax is spent on i personally disagree with but it's life and I can't change it.
Disposable sanitary wear is a choice, there are other methods if people want to purchase something else.
As for children missing school because of no period protection, that doesn't need a charity it needs intervention to ensure their parents are meeting their child's needs. Who on earth doesn't buy essentials for the child, they can be picked up very cheap. Says a lot on their views on education too if they let their children skip school.