<p>The number of class requirements depends on the school. For my school, in order to graduate, you need to have 4 years of English, 2 years of science (of which one has to be biology), 2 years of math, 3 semesters of gym and 1 year of Fitness for Life (it’s our health class that all freshman take), 3 years of social studies (1 of which must be U.S. History), and an additional academic elective requirement (meaning another year of either science, math, english, social studies, or world language. In addition, we must accumulate about 100 credits before graduation (most year-long classes are weighted at 5 credits each). And in our particular state, we must also have at least 990 hours in the classroom.</p>
<p>You don’t have total freedom choosing your classes (see guidelines above); however, in my school in particular, there are many different classes you can take to fill certain requirements. Some classes, usually electives, are unleveled, but most academic classes are. We have 5 ranks (from highest to lowest): AP, Honors, Accelerated/Enriched, College Prep, and Standard Prep.</p>
<p>Most schools in the U.S., I think, have either one of these 3 types of schedules. </p>
<p>Type 1: My school runs 8 periods long, which means 8 blocks of time that we can fill in. One of the periods has to be subtracted as lunch, leaving only 7 blocks of time (each are around 45 minutes long). Some sciences (all levels of chemistry, all levels of physics, and AP Bio) have double periods, because of the extra lab period in addition to the normal lecture period, so that also takes up time. Usually a student’s schedule for each year is composed of one of each of these classes: math, science, history, english, world language, physical education, possible other elective (such as music/art). We have each of these classes every day.</p>
<p>Type 2: Another type of school schedule I heard of is one that runs on a two-day schedule. Basically, you’ll have a set of 4 blocks/periods (that will be twice the length as the periods described in Type 1) the first day and 4 different blocks/periods (again, 2x the length as those described in Type 1) the next day and then the cycle will repeat for the entire year. The amount & type of classes is similar to Type 1. I have never had this type of scheduling so I don’t really know much about that.</p>
<p>Type 3: Lastly, the third type of schedule I’ve seen is the one where you have a certain 4 periods (again 2x length of Type 1) every day for the first semester, and then a different 4 periods (2x Type 1 length) everyday for the second semester. The amount & type of classes is once again, similar to Type 1.</p>
<p>This is for the majority of students in public school. I don’t know much about other types of U.S. schools such as charter or private.</p>