Science Degree Explained: BA vs BS, Credits & Planning (Guide)

I remember a student named Leo who walked into my office during his second semester. He was staring at a degree audit form, looking completely defeated. “Dr. Westbrook,” he said, “I thought I was a Biology major, but my advisor says I’m actually in a Bachelor of Arts program, and now the medical schools I like say I’m missing three heavy lab classes.” Leo had chosen his degree path based on the title of the subject, not the structure of the degree itself. He didn’t realize that a “science major” can look very different depending on whether it is a Bachelor of Science or a Bachelor of Arts. This confusion is exactly why I want to break down these terms today.

What is a Science Degree?

A science degree, primarily known as a Bachelor of Science (BS), is an undergraduate program focused on technical, mathematical, and empirical subjects. It prioritizes the scientific method, laboratory research, and quantitative analysis. Unlike other degrees, the BS requires a high volume of credits directly related to the specific major, leaving fewer rooms for general electives.

When we talk about a science degree, we are talking about a curriculum built on evidence. If you choose this path, you are signing up to prove theories through data. I often tell my students that a science degree is like a specialized toolkit. While other degrees give you a broad set of tools for many tasks, a BS gives you high-powered, specific tools designed for one complex job, like chemistry, physics, or engineering.

In my years as an advisor, I have seen that the “Science” in the name matters less than the “Bachelor of Science” designation. You can actually earn a degree in a science subject, like Psychology, and have it be a Bachelor of Arts. The difference lies in how much math and lab work you do. A BS is the “deep dive” version of an education.

Why choose a Bachelor of Science over other options?

A Bachelor of Science is designed for students who want to enter technical, clinical, or research-heavy careers immediately after graduation. It provides a rigorous foundation in specialized skills and often includes “pre-professional” tracks for medicine or dentistry. This degree is ideal for those who prefer concrete data and structured laboratory environments.

Building on this, many employers in technical fields look for the BS designation. They know that a student with a BS has spent more hours in a lab and has taken more advanced math courses. For example, a BS in Computer Science usually requires Calculus II or III, whereas a BA might only require basic Statistics.

Interestingly, the choice often comes down to your long-term goals. If you want to work as a lab technician or a civil engineer, the BS is usually the standard. It signals to the world that you have undergone a specific type of technical “stress test” during your four years of study.

How does a Bachelor of Science (BS) compare to a Bachelor of Arts (BA)?

The primary difference between a BS and a BA is the balance between depth and breadth. A Bachelor of Science focuses deeply on a specific major with many required technical courses. A Bachelor of Arts offers a broader education, requiring more “liberal arts” classes like foreign languages, philosophy, and literature.

In my advising sessions, I use a simple analogy. Think of a BA as a wide-angle lens on a camera. It lets you see the whole landscape of human knowledge. A BS is more like a microscope. It focuses very tightly on one small part of the world so you can see every tiny detail. Neither is “better,” but they serve different purposes.

Below is a comparison table I developed for my first-year orientation workshops. It helps students see how their schedule might change based on the degree type.

As you can see, the BS is “heavy” on the major. If you are a BS student, you might find that almost every class you take after your freshman year is related to your science field.

What is the difference between a major, a concentration, and a minor?

A major is your primary field of study, requiring about 30 to 75 credits. A concentration is a specific “niche” or specialty within that major, like “Marine Biology” within a Biology major. A minor is a secondary subject consisting of 15 to 21 credits, used to add extra skills.

I once worked with a student named Sarah who was a Chemistry major. She felt that “Chemistry” was too broad. We looked at her options and found a concentration in “Medicinal Chemistry.” This allowed her to use her elective credits to focus specifically on how drugs interact with the human body. She didn’t change her major; she just narrowed her focus.

Understanding these layers is vital for your degree planning. It allows you to customize your education without having to double-major, which can be very difficult in a science program.

• Major: Your main “home” department (e.g., Physics).
• Concentration: Your “specialty” (e.g., Astrophysics).
• Minor: Your “side interest” (e.g., Mathematics or Spanish).

How to choose a concentration in a science degree

Choosing a concentration involves looking at the specific job market or graduate school requirements you are targeting. It is a way to tell employers that you have “extra” knowledge in one specific area of your major. This can make your resume stand out in a pile of general science degrees.

For example, if you are a Computer Science major, a concentration in “Cybersecurity” tells a company exactly what you are good at. Without it, they might just see you as a general programmer. I always suggest looking at job postings in your sophomore year to see which concentrations are in high demand.

How do credit hours work in a science program?

A credit hour is a unit of measure representing the time you spend in class and studying. Typically, one credit hour equals one hour of classroom instruction and two hours of outside homework per week. A standard science degree requires 120 total credits to graduate, averaging 15 credits per semester.

In science degrees, credit hours can be tricky. A biology lecture might be 3 credits, but the lab that goes with it might only be 1 credit. However, that 1-credit lab might meet for three or four hours every week. This is a common point of frustration for my students. They feel like they are working more hours than their friends in other majors for the same amount of credit.

Here is a breakdown of how a typical science student’s time is measured:

• 15 Credits per semester: The “standard” load to graduate in four years.
• 3 Hours of work per credit: The expected total time (class + study) per week.
• 45 Hours per week: The total “work week” for a full-time science student.
• Lab-to-Credit Ratio: Often 3 hours of physical lab time equals only 1 academic credit.

Why the “Credit Hour” matters for your GPA

Your Grade Point Average (GPA) is weighted by credit hours. A 4-credit “Organic Chemistry” class will have a much bigger impact on your GPA than a 1-credit “First-Year Seminar.” I’ve seen many students neglect their high-credit science classes to focus on easier, low-credit electives. This is a mistake that can hurt your academic standing.

Always prioritize your time based on the credit weight of the course. If a class is worth 4 or 5 credits, it is the “anchor” of your semester. If you do well in it, your GPA will soar. If you struggle, it can pull your average down significantly.

Why does accreditation matter for science students?

Accreditation is a “seal of approval” from an independent board that ensures a college meets specific quality standards. For science and technical degrees, programmatic accreditation (like ABET for engineering) ensures that your education is rigorous enough for professional licensing. Without it, your degree might not be recognized by employers.

Think of accreditation like a government safety rating on a car. You wouldn’t want to drive a car that hasn’t been crash-tested. Similarly, you don’t want a science degree from a school that hasn’t been “tested” by an accrediting body.

There are two main types you should know:

1. Institutional Accreditation: This covers the whole university. It is required for you to receive federal financial aid (FAFSA).
2. Programmatic Accreditation: This covers a specific department, like Chemistry or Engineering. It is often required for certain high-level jobs or certifications.

If you attend a non-accredited program, you may find that other schools will not accept your transfer credits, and you might be ineligible for professional licenses after graduation.

How can you successfully transfer science credits?

Transferring science credits involves having your previous coursework evaluated by a new university to see if it matches their requirements. This process depends on “equivalency,” meaning the course you took must be almost identical in content and rigor to the course at the new school. Science credits are often harder to transfer than general education credits.

I once helped an international student who had taken “General Chemistry” in his home country. When he arrived in the U.S., the university didn’t want to give him credit because his previous course didn’t have a “wet lab” component. He had to provide a syllabus to prove he had done the physical experiments required.

To ensure your credits transfer, follow these steps:

• Keep your syllabi: Save the detailed course descriptions and list of lab experiments.
• Check the “C” rule: Most schools only transfer credits if you earned a “C” or better.
• Use transfer databases: Many states have websites (like “Transferology”) that show how credits move between schools.
• Talk to a Transfer Counselor: Do this before you leave your current school.

Common pitfalls in transferring science courses

The biggest mistake is assuming that “Biology 101” at a community college is the same as “Biology 101” at a major research university. Sometimes, the community college version is for “non-majors,” while the university requires a version for “science majors.” If you take the wrong one, it won’t count toward your degree.

Always ask your advisor: “Is this course for science majors or non-majors?” This one question can save you an entire semester of wasted time and money.

What tools can help you plan your science degree?

Navigating a science degree requires good data. Fortunately, there are several free tools provided by the government and educational organizations that can help you make informed decisions. These tools help you compare costs, check accreditation, and see how much graduates actually earn.

1. College Scorecard: A U.S. Department of Education tool that shows the average debt and salary of graduates from specific programs at specific schools.
2. NCES College Navigator: A massive database where you can search for schools by major, location, and accreditation status.
3. Transferology: A digital tool that helps you see how your specific courses will transfer to different colleges.
4. Common App: The standard platform for applying to many colleges, which often includes specific requirements for science programs.
5. ABET Search: A directory of accredited engineering and technology programs.

Using these tools early in your high school or early college years can prevent the “Leo situation” I mentioned earlier. You will know exactly what you are signing up for before you pay your first tuition bill.

Planning your timeline: A four-year science degree map

A typical science degree follows a very strict sequence. Because many classes have “prerequisites” (classes you must take before you can move to the next level), missing one class can delay your graduation by a full year. This is why planning is more critical in the sciences than in many other fields.

• Year 1: Focus on “Foundational” math and science (Calculus, General Chemistry).
• Year 2: Move into “Core” requirements (Organic Chemistry, Physics, Biology) and pick a concentration.
• Year 3: Begin “Upper-Division” specialized labs and research projects.
• Year 4: Complete a “Capstone” project or senior thesis and prepare for graduation or grad school.

If you are an international student, your timeline might also include English proficiency requirements or visa-related credit minimums. Always stay in close contact with your international student advisor to ensure you are maintaining your status while pursuing these rigorous courses.

Questions to ask your academic advisor

To wrap up, I want to give you a “cheat sheet” of questions. Take these to your next advising appointment to ensure you are on the right track.

• “Is my program a Bachelor of Science or a Bachelor of Arts?”
• “Does this program have programmatic accreditation (like ABET or ACS)?”
• “What are the specific math requirements for this major?”
• “Are there specific ‘gatekeeper’ courses I need to pass to stay in the major?”
• “How many of my transfer credits have been officially accepted toward my major requirements?”

Frequently Asked Questions

What is the main difference between a BS and a BA? The Bachelor of Science (BS) focuses on technical and scientific mastery with many major-specific credits and labs. The Bachelor of Arts (BA) is broader, requiring more humanities and liberal arts courses, which allows for more elective flexibility.

Can I go to medical school with a Bachelor of Arts? Yes, you can. However, you will still need to take all the required science and lab courses (like Organic Chemistry and Physics) that medical schools demand. Many students find it easier to get these done within a BS degree structure.

How many credits do I need for a science degree? Most science degrees in the United States require 120 credit hours. This usually breaks down to 60–75 credits in the major, 30–40 in general education, and the rest in electives.

Does a science degree require more work than a humanities degree? While “work” is subjective, science degrees often require more physical hours on campus due to laboratory requirements. A 1-credit lab can take 3 to 4 hours of class time per week, which is more than a typical 1-credit lecture.

What is a “prerequisite” in a science program? A prerequisite is a course you must pass before you are allowed to take a more advanced course. For example, you usually must pass General Chemistry I before you can take General Chemistry II.

Will my science credits from a community college transfer? Usually, yes, but they must be “equivalent” to the courses at the four-year school. It is essential to check if the course was intended for science majors or non-science majors before you enroll.

What does “ABET accredited” mean? ABET is a specific organization that accredits engineering, computing, and technology programs. Having an ABET-accredited degree is often a requirement for becoming a licensed professional engineer (PE).

Can I minor in a science subject if I am an Arts major? Absolutely. Many students major in something like English or Music and minor in Biology or Chemistry. It requires about 15–21 credits and is a great way to show a “well-rounded” skill set.

How much does a science degree cost per credit? Costs vary wildly by school, ranging from $300 to over $1,500 per credit hour. Science degrees can also have “lab fees” ranging from $50 to $500 per course to cover the cost of chemicals and equipment.

Is a BS degree better for getting a job? For technical and scientific roles, yes. Employers in fields like engineering, nursing, and lab research specifically look for the BS because it guarantees a certain level of technical training.

How do I know if I’m ready for a science degree? If you enjoy problem-solving, are comfortable with math, and like discovering how things work through data and evidence, you are likely a good fit. Don’t let the “jargon” scare you; it’s just a new language you will learn one step at a time.

(This article was written by one of our staff writers, Alan Westbrook. Visit our Meet the Team page to learn more about the author and their expertise.)