A California high school where a majority of juniors opted out of Common Core testing has backed off of plans to ban the students from using the school’s parking lot and from taking part in senior class activities after parents and education groups raised a fuss. C.J. Foss, principal of Calabasas High School in Los Angeles County, last week sent an email to seniors-to-be announcing that certain privileges would be withheld from students who skipped the controversial test, which detractors say is an attempt to nationalize America’s public education system. Although the test, which critics say dictates curriculum, is widely...