I know from reading literature distributed by PUSD that kids should stay out of the sun in the middle of the day. I know that melanoma rates are rising, and skin cancer rates in children are rising. I know that being in or near water increases the sun's affect on the skin.
I am sure these days are popular with school staff since they get the kids out of their hair for the day.
A teacher told me they were bringing sunblock and would remind the children to reapply during the day. This meant that a garbled loudspeaker reminder went out several times at the pool, which the kids either couldn't understand or didn't hear at all (splashing in a pool with screaming kids can do that).
The adults who had this idea, "Let's send the 5th grade to the pool for the whole day!" should have been told, "That's a bad idea. That is too much sun exposure for children."
The kids at Harvest Park Middle School are being pressured to attend pool day. There are announcements that many children have not signed up, and that the school will lose money for each child who stays home that day.
I know several children who needed medical attention for the burns they received at their Pleasanton school's pool day.