In the US, our "experts" have warned that welding helmets should be avoided, because they are often "not dark enough." Mine happen to be shade 11 for small electrodes and less than 250A; the experts say at least a 12 is needed. My store-bought eclipse glasses are a little darker than my helmets are.
Half the time "experts" are self appointed and know little or nothing. Then whatever they say is reported by some reporter who knows and understands nothing on the topic. Then the school principal reads it and tells the teachers to get the kids ready. And with this exercise of telegram the teachers end up telling the students something which makes no sense. "Tomorrow an unusual event will take place. If it is overcast you will form in the gym where the PE teacher will eclipse the Principal."
I have seen eclipses with welding glasses or lenses or shades and they were perfect. But, of course, they come in different grades and some may be too light and some may be too dark which makes such a general statement meaningless. If a bit too light it is easy enough to wear sunglasses.
My relatives in Dallas bought the shades from Amazon and report they find them a bit too dark and they liked the welding lens better.
On the other hand they just reported it is overcast there so the entire exercise might be moot if it does not clear up soon.
My 13 year old nephew needed his parents to sign an authorization to see the eclipse at school (!) and it seems some parents do not want their kids to view the eclipse in the yard and they will get to watch it on TV.
Being overcast it seems they will ALL get to see it on TV and without need for special shades or authorization.