One of the most confusing parts of transitioning to high school is figuring out how classes work, how you pick them, and what you’re actually locked into. Here’s a plain-language breakdown of how scheduling and class selection typically works.

Required Courses vs. Electives

Every student must take a set of required courses — usually English, math, science, social studies, and sometimes PE or health — to graduate. Beyond those, you have elective slots where you choose subjects that interest you. The number of elective credits you need and what counts toward graduation varies by school, so always check with your counselor when making choices.

Course Selection Usually Happens in the Spring

Most high schools have a course selection period in the spring semester where you choose your classes for the following year. This is done through a form, an online portal, or a meeting with your counselor. It’s important to take this process seriously, because the choices you make in 9th grade affect your options in 10th and beyond — especially in math, where each course is a prerequisite for the next.

Schedules Have Periods

High school classes are divided into “periods” — blocks of time, typically 45–90 minutes each, that repeat through the week. Some schools use a traditional 7-period daily schedule; others use a block schedule where you have fewer classes per day but longer periods. Your school will explain its structure at orientation.

Can You Change Your Schedule?

Usually yes — but there’s a window. Most schools allow schedule changes in the first week or two of school for legitimate reasons (wrong level, schedule conflict, missing requirement). After that, changes become harder to make and may affect your transcript. If you need to change something, go to your counselor’s office early rather than waiting.