11. I seem to remember it taking almost an entire class period to just define it. 12. For this reason, the typical activity takes one or more class periods to finish. 13. At Northfield High School, students attend seven class periods on a two semester schedule. 14. Class days consist of six class periods . 15. Each class period is 50 minutes in length with 180 instructional days in the school year. 16. Each class period lasts 43 minutes. 17. Instructors in other disciplines also begin each class period with prayer or a short devotional thought. 18. Their weekday schedule includes meals, chapel service, several class periods , and prayer circles. 19. She also doubled class periods to increase exposure to math, science and English beyond required levels. 20. Now she uses a school library computer during a class period to take a personal business course.
