41. Following the class period , the transparencies are easily restored to their original unused state by washing off with soap and water. 42. Instructors in other disciplines also begin each class period with prayer or a short devotional thought, many which encourage student input. 43. The large numbers taking released time means the seminary has up to six or seven periods corresponding to the public school class periods . 44. That year, Mobile County Public Schools also abandoned the traditional 50-minute class periods for the 98-minute block schedule. 45. Seniors may leave as early as noon; other grades stay until 3 : 10 p . m, depending on your class periods . 46. Elena Hamilton, 13, an eighth grader, said that many class periods began with students going next door to ask teachers for chairs. 47. He was on the second floor just as the bell for the day's first class period rang and students started leaving their homerooms. 48. They've stuck with the more traditional schedule, which encompasses six to eight class periods daily, each lasting 45 to 50 minutes. 49. Students spend nine class periods a week with the same group of peers, and the IBET teachers work together to produce an integrated curriculum. 50. However, Wednesdays and Thursdays implement a " Block Schedule " in order to get more information to the students in a longer class period .