High school learners might discuss the importance of taking science courses, and homeschoolers will take the discussions further.

The upper-grade science courses prepare the students for college education. Biology will be the first-course students take in science courses in upper-grade students, but what comes after biology in high school?

In most cases, students will take chemistry or physics courses after biology. The decision to take one of these sciences may depend on the future education prospect.

Here are reasons to adhere to the right high school science sequence

Why You Should Adhere To the Right High School Science Sequence

Colleges prefer students who take science courses over those who don’t

Science sequence evokes strong emotions among learners, but these courses matter and determine the course you will take in college.

Therefore it determines the planning or (lack thereof) which impacts the ability to achieve your dreams.

Although you can skin chemistry, this will be a detrimental decision in the long run. The regular science sequence for high school students involves a general biology class in the eighth grade, followed by a general chemistry class.

Academically inclined students may take physics, AP biology, or AP chemistry which might be challenging and involve courses.

You should advise your student to avoid science courses if they do not want to enroll in college in the future.

However, this will be detrimental as 15-year-olds should not make lifetime decisions at this age. One might change their mind and decide to go to college.

Thus even if you decide to do the bare minimum, you should take at least one chemistry course.

Although your kid does not have to take dual enrollment science courses to excel in college, they will need the minimum sequence.

You should check the state’s requirements to ensure you meet the college requirements. The colleges will administer students willing to take serious coursework.

You may add elective courses like oceanography in addition to the typical science sequence. The collages will choose the students who score C and above in Chemistry and A in environmental science in most cases.

Therefore an environmental science course will be a better selective course.

Science and Math are not stand-alone courses

The educational science sequence entails courses that build up on one another. Therefore math and science are not stand-alone courses as they are interrelated.

The biology course will borrow ideas from physics and chemistry to explain biology systems and natural phenomena.

Thus, skipping a biology course or avoiding elective physics and chemistry courses will impact the future understanding of the science and math courses.

Chemistry provides preparation beyond background knowledge

Colleges take students who take serious coursework. Moreover, students who take these courses will be prepared for the rigor of the college courses as they will create good study skills and acquire background knowledge.

They can manage time properly, contributing to achieving your degree course and improving your career in the long run.

Should I Take Biology Or Chemistry First?

You should take Biology courses first as they come first in the high school science sequence. You will take the course in the 8th or 9th grade.

The biology course is the building block for future science and math courses. Moreover, it is not an elective course but compulsory for all students.

You may encounter the general chemistry class in college prep. You will choose between the 3rd or 4th classes and opt for physics, AP biology, or AP chemistry.

You may wish to start with the biology course as it focuses less on math, unlike other science courses.

Thus, it gives you adequate time to hone your math skills before moving to math-focused sciences. On the other hand, chemistry emphasizes mathematics and lab work more than biology.

Thus, the scope of the course can be overwhelming for students who have not mastered math concepts.

Is Biology Harder?

Biology is the least hard science compared to physics and chemistry, and it is the most preferred course for most high school students.

It is usually the first science course and focuses less on math, thus ideal for most students. The main biology topics include cells, ecology, genetics, human growth and development, and organisms and their reactions to the environment.

Tutors will advise their students to take the biology lessons first before undertaking chemistry or physics as the later courses seem hard for most students.

However, you should be keen on biology concepts as they borrow chemistry, physics, and math ideas. You can easily excel in biology if you master the basic concepts.


The right high school science sequence prepares students for college education, ensuring they get adequate knowledge before enrolling in different courses.

In the US, the right science sequence is biology, chemistry, then physics. One should start with the biology course as it is simpler than other sciences and does not involve complex math problems.

However, chemistry comes after biology and determines the courses you will take in the high learning institution.

Physics is a bonus that increases a student’s score and ability to attain the minimum college entry points.

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