My school starts at 7:30 and ends around 2:30; it also runs on the "A-B" Block Schedule. It basically goes like this:
(the periods go in order listed)
Day 1 - Periods 1 - 4
Day 2 - Periods 5 - 7, 1
Day 3 - Periods 2 - 5
Day 4 - Periods 6, 7, 1, 2
Day 5 - Periods 3 - 6
Day 6 - Periods 7, 1 - 3
Day 7 - Periods 4 - 7
Repeat
Each class is about eighty-two minutes long and the break between classes is about ten minutes. Lunch is about thirty minutes long and when you have it depends on what class you have third that day. Each class has a specified lunch labeled "A" or "B." "A" comes before third block and "B" obviously comes after.
Eighth graders through Juniors have five required classes (Math, English, Science, History, and Religion [that is basically just teaching the Catholic point of view on morality. Which isn't that bad; they never condemn a person, just the actions.]) and two elective periods (this can range from two to four classes, depending on whether the class takes up the whole year or just one semester). The seniors have three required classes (Math, English, and Religion), all of the other periods are elective.
Seniors also have special privileges, like going to lunch five minutes early, cutting the line in lunch if they're late, having a special shirt to wear on certain days, and having a "senior" shirt (which is just white in stead of green.)