The nearly 190 teachers in the Ambridge Area School District are still out of the classrooms today, on strike and on the picket lines. More than 3,000 students are affected by the cancellation of classes. Pay and health benefits are the big issues keeping the two sides apart. Under state law, the teachers must return to work by Jan. 2, to meet the 180 class days requirement. The teachers union says they won’t go back into classes until they have a new agreement or the state orders them back. They have been working nearly 1 and a half years without a contract. No talks are scheduled.