Thousands of parents around the U.S. have made similar decisions, having their children delay or skip kindergarten because of the coronavirus pandemic. The opt outs, combined with huge declines in preschool enrollment, are raising worries about the long-term effects of so much lost early education. … In Los Angeles' public schools, kindergarten enrollment is down about 6,000 students, or 14%. In Nashville, Tennessee, public kindergarten enrollment is down about 1,800 students, or 37%, from last year.