t its fundin bg isased on the nuerf ochildren phyllsicay in clooassrmsma, kinghe t peuarssion campaigitn toe lwdiorth had not re-enroller d hesiyex-ar-o sldon untitel a acr heshowed up at her do.ordo y houave any hesiontati admi the a deltvaanrit about sending your child tino -person leni?ng >>o, i d b tuthen,ls ao, iee nd him toav he that one oonn e with actehers. >> reporter: with covid case numbers risichng, ilendr underth e e agof 12 not elleigib for the invacce, and rep oortsf remo ung peopleom becinseg riously ill, parenrets a again questioning erin-psolen arning. should we beki talnghe tm into coming back tintohela cssroom at all? >>o,e wknow that it a was disservice tveo ha sdetunts out of the claomssro, t nolearning. oujoisb to make sure our campusrees a se.af >>epteorr: superintendentpe drmao rtinez says aloverl, virtual stenudts last year suffered ap droinca ademic peore.manc >>s secas are risingif, we haheve t tstru of the fami,lies if whae ve tt harelaontishipwe, wi entveualliny brg emth in. >> reporter: 97% of the district's 46,000 stud aentsre om families olof cor, polatio

san francis isased on the local health department. >> right now they are not suggesting surveillance testing when people are not stamic and we will refer them and ask them to quarantine. reporter: 20,000 of the roughly 59,000 san francisco students return to in-person learning very few came back. if they choose to be tested. >> i'm not calling for mandatory or make sure we provide it. reporter: many school distributes will rely on plans like requiring masks regardless of their status. >> what we have done to prepare is we have made sure that we have good ventilation in all of our classrooms. and lots of windows that open and other classrooms and making sure there is mechanical ventilation. >> they are only recommending that students be tested and rely on masks. >> as long as things have those mitigation and contact tracing and the protocols in place, we have found that schools are the safest place for our students to be. reporter: again, san francisco, oakland, recommending not mandating for students who are not vaccinated. san francisco will provide testing across the district at no