How to Become a Scientist: Step by Step

Step 1: Build a Strong Foundation in Math and Science

Every scientific career begins with a solid grounding in core subjects. During high school, take the most advanced math and science courses available to you, including calculus, statistics, biology, chemistry, and physics. These courses develop the quantitative reasoning and analytical thinking skills that form the backbone of all scientific work.

If your high school does not offer advanced courses in a subject that interests you, look for online courses, community college classes, or science enrichment programs that can supplement your education. Many universities and scientific organizations offer free or low-cost resources for motivated students. Reading popular science books and following current research developments in areas that fascinate you can also help clarify which direction you want to pursue.

Beyond coursework, start building habits of scientific thinking. Practice asking questions about the world around you, looking for evidence to support or refute your ideas, and considering alternative explanations for observations. These habits will serve you throughout your career, regardless of which specific field you enter.

Step 2: Choose Your Undergraduate Major

Your bachelor's degree is the formal entry point into a science career. Most aspiring scientists major in a natural science such as biology, chemistry, physics, geology, or environmental science, though interdisciplinary programs in areas like biochemistry, neuroscience, bioinformatics, or materials science are increasingly popular and can provide a distinctive educational profile.

When choosing a major, consider both your intellectual interests and the career opportunities in that field. Talk to professors, graduate students, and working scientists in departments that interest you. Visit campus research labs and ask about ongoing projects. Many students change their major at least once during college, so do not feel locked in by your initial choice. What matters most is that you develop strong quantitative skills, gain laboratory experience, and graduate with a clear understanding of the scientific method.

Regardless of your specific major, plan to take courses in calculus (through at least multivariable calculus), statistics, scientific writing, and research ethics. Programming courses, especially in Python or R, are increasingly valuable across all scientific disciplines. If your university offers a research methods or experimental design course, take it early, as these skills will benefit you in every subsequent course and research opportunity.

Step 3: Get Hands-On Research Experience

Classroom learning teaches you the theory of science, but research experience teaches you the practice. Most universities offer opportunities for undergraduates to work in faculty research labs, either as volunteers, for course credit, or as paid research assistants. Start looking for these opportunities as early as your sophomore year.

The National Science Foundation funds Research Experiences for Undergraduates (REU) programs at universities and research centers across the country. These competitive programs provide summer stipends, housing, and mentorship for students conducting research under the guidance of experienced faculty. REU experiences are particularly valuable because they immerse you in a research environment full-time and often result in conference presentations or co-authored publications.

Industry internships at pharmaceutical companies, biotech firms, national laboratories, and government agencies offer another important form of research experience. These positions expose you to the way science is practiced outside of academia and can help you decide whether you prefer academic or industry career paths. Many companies recruit heavily from their internship pools, so a successful summer internship can lead directly to a job offer after graduation.

Whatever form your research experience takes, focus on learning broadly. Master new techniques, ask your mentors questions, attend lab meetings and seminars, and start reading the primary literature in your area of interest. The goal is not just to produce results, but to develop the critical thinking and practical skills that will carry you through graduate school and beyond.

Step 4: Decide Whether to Pursue Graduate School

The decision to attend graduate school is one of the most important choices you will make in your science career. For many research-oriented careers, a graduate degree is essential. A PhD is typically required to lead an independent research program in academia or to hold senior scientist positions in industry. A master's degree may be sufficient for some industry, government, and education positions, though advancement opportunities can be more limited.

Before applying, research the specific requirements of your target career. Talk to people already working in the roles you find interesting and ask about their educational backgrounds. Consider visiting graduate programs, attending open house events, and reaching out to current graduate students to learn about their experiences. The culture, mentorship, and research opportunities within a program matter just as much as the institution's overall reputation.

Start preparing your graduate school applications during your junior year of college. Most PhD programs require GRE scores (though an increasing number are dropping this requirement), letters of recommendation from faculty who know your research abilities, a personal statement describing your research interests and career goals, and your undergraduate transcripts. Strong research experience is the single most important factor in competitive PhD admissions.

Step 5: Complete Your Graduate Training

Graduate school is where you transition from a student of science to a practicing scientist. A PhD program typically takes four to seven years and involves completing coursework, passing qualifying examinations, and conducting original research that culminates in a doctoral dissertation. Master's programs are shorter, usually two to three years, and may include a thesis, a capstone project, or a non-thesis coursework track.

The heart of your graduate training is your research. You will work closely with a faculty advisor (your principal investigator or PI) to identify research questions, design experiments, collect and analyze data, and publish your findings in peer-reviewed journals. You will also present your work at conferences, write grant proposals, and develop expertise in the specialized methods and knowledge of your subfield.

Graduate school is demanding, and it is important to take care of your mental and physical health throughout the process. Build relationships with your peers, seek out multiple mentors, take advantage of professional development opportunities offered by your university, and maintain interests and relationships outside of the lab. The skills you develop during graduate school, including resilience, time management, and the ability to work through setbacks, are just as important as your technical training.

Step 6: Gain Postdoctoral or Early-Career Experience

After earning your PhD, many scientists pursue one or more postdoctoral research positions (postdocs) before applying for permanent jobs. A postdoc is a temporary position, typically lasting two to four years, that allows you to develop additional expertise, build your publication record, and establish yourself as an independent researcher. Postdocs are most common in academia but also exist in industry, government laboratories, and nonprofit research institutes.

If your career goals point toward industry, you may choose to skip the postdoc and apply directly for research positions at companies. Industry entry points for PhD holders include research scientist, data scientist, applications scientist, and medical science liaison roles, among others. Many companies value the deep technical expertise and independent problem-solving skills that PhD training develops.

Regardless of which path you take, use your early career years to expand your professional network, develop skills outside your core research area (such as project management, grant writing, or computational methods), and clarify your long-term career goals. The first few years after graduate school are a period of rapid growth, and the decisions you make during this time will shape the trajectory of your career.

Step 7: Apply for Permanent Positions

With your training and experience in place, you are ready to pursue permanent positions. For academic careers, this means applying for tenure-track faculty positions at universities or permanent research positions at institutes and national laboratories. The academic job market is competitive, and most candidates apply to dozens of positions before receiving an offer. Your application will typically include a cover letter, CV, research statement, teaching statement, diversity statement, and letters of recommendation.

Industry positions are typically filled through a combination of online applications, recruiter outreach, and networking. Tailor your resume to highlight the skills and accomplishments most relevant to each position, and be prepared to explain how your research experience translates to business value. Many companies use technical interviews, research presentations, and case studies as part of their hiring process.

Government agencies, including the NIH, NSF, EPA, NOAA, and the national laboratory system, hire scientists at various career stages through structured application processes. These positions often offer excellent job security, competitive benefits, and the opportunity to work on research with direct public impact. Professional societies and specialized job boards in your field are the best resources for finding open positions across all sectors.