Nothing has been announced but I wouldn't be surprised if summer school is canceled here.
in my state (washington) summer school is not only canceled the state superintendent of education announced that no one should count on schools starting back up in the fall on a their traditional timelines so for parents here it's a wait and see that could extend into next fall.
what will parents do? no idea. the daycares that are available through community resources (traditional before/after school through school districts) are strictly restricted to first responders/medical workers so even if you are essential they won't serve you because the health departments rules for covid has required these programs to greatly reduce the number of children they can provide care for. that means that the social services and unemployment staff that can't work from home and have very little variance availability in hours (they traditionally have to work their 8 between 7 am and 6 pm) are in a situation i'm not sure how they handle. i know that when i worked for social services there was no way we could permit a staff member to bring a child into work, the risk to their health and safety was too great (and i imagine it's greater now, stressed out people tend to act out more).
traditional non in session school childcare is'nt available-no private school summer programs, no public school day camps, no summer camps. covid rules have caused family daycare and other providers to have to reduce the numbers they take.
on a final note-i myself when my kids were little and many of my co-workers had no back up family or friends we could call on for emergent or known lack of childcare. everyone we knew worked, and our (then) surviving parents were too elderly. if one of the kids got sick or there was a period of no childcare available (holidays we didn't get off from work or the handful of weeks our daycare was closed each year) we were VERY fortunate to have and be able to use our vacation/floating/comp/sick time. i don't know what the deal is with all states/employers now or in the near future but some essential workers in my state are currently prohibited from using other than their sick leave accruals. my oldest is in this situation and i strongly suspect that the only reason she's getting the handful of hours at her job at this point is b/c so many of her co-workers have kids that they can't leave alone.