STEM courses are classes in science, technology, engineering, and mathematics. The acronym covers a broad range of subjects, from introductory biology in middle school to specialized fields like artificial intelligence or biomedical engineering at the college level. What counts as a STEM course depends on where you are in your education, but the common thread is a focus on quantitative reasoning, scientific inquiry, and problem-solving.
The Four STEM Disciplines
At the most basic level, STEM breaks into its four namesake categories. In elementary and middle school, STEM education is essentially the standard math and science curriculum required for all students. As you move into high school and college, the courses get more specialized and branch into dozens of distinct fields.
The U.S. Department of Homeland Security formally designates four core STEM areas at the college level: engineering, biological and biomedical sciences, mathematics and statistics, and physical sciences. Any degree program within those four areas automatically qualifies as STEM. Beyond those core four, hundreds of additional programs carry official STEM designation, spanning fields from computer science to environmental economics.
Science Courses
Science is the broadest of the four categories. In high school, the typical STEM science track includes biology, chemistry, physics, and environmental science. College-level science branches into far more specialized territory: molecular biology, genetics, organic chemistry, analytical chemistry, nuclear physics, ecology, microbiology, and immunology, among others.
Environmental science has its own growing cluster of courses, including environmental biology and environmental chemistry. These fields blend traditional science with applied research on pollution, conservation, and land use. The federal government recently added environmental and natural resource economics to the official STEM list, recognizing how closely fields like cost-benefit analysis and environmental impact assessment rely on scientific and mathematical methods.
Technology Courses
Technology courses focus on computing, information systems, and digital infrastructure. The most common entry point is computer science, but the category extends well beyond programming. Officially designated STEM technology programs include artificial intelligence, information technology, cybersecurity, data modeling, computer networking, and human-computer interaction.
Newer additions reflect the pace of the tech industry. Bioinformatics (using computing to analyze biological data), computational biology, and cyber forensics all carry STEM designation. At the high school level, technology courses might include introductory programming, web development, or robotics. At the college level, they split into distinct degree tracks like software engineering, data science, and information assurance.
Engineering Courses
Engineering is one of the most clearly defined STEM categories. The major branches are mechanical, civil, electrical, chemical, biomedical, computer, and environmental engineering. Each focuses on applying scientific principles to design, build, or improve systems and structures.
High school students typically encounter engineering through project-based courses, robotics clubs, or pre-engineering programs. In college, engineering programs are intensive and math-heavy, usually requiring multiple semesters of calculus, physics, and discipline-specific coursework. Engineering technology programs, which emphasize hands-on application over theoretical research, also fall under the STEM umbrella.
Mathematics Courses
Math is the connective tissue of STEM. Nearly every STEM degree requires a foundation in calculus, linear algebra, and statistics. These three courses form the mathematical core that supports work in every other STEM field, whether you’re modeling protein structures in biology or training machine learning algorithms in computer science.
Beyond the basics, STEM math courses include differential equations, discrete mathematics, probability theory, and applied statistics. Statistics and data analysis have become especially important as more industries rely on large datasets to make decisions. At the high school level, the STEM math track typically runs from algebra through precalculus or AP Calculus, with AP Statistics as an increasingly popular option.
Skills STEM Courses Build
STEM courses develop a specific set of cognitive abilities that transfer across careers. Research on student achievement across countries found that general academic proficiency in math, science, and reading accounted for more than 40% of the variation in STEM performance. In other words, STEM success draws heavily on a foundation of quantitative reasoning, scientific literacy, and the ability to interpret complex information.
The practical skills you build in STEM courses include analyzing data, testing hypotheses, constructing logical arguments, and solving problems with multiple variables. These aren’t abstract academic exercises. They translate directly into workplace tasks like evaluating evidence, troubleshooting systems, and making decisions based on incomplete information. STEM coursework also tends to emphasize collaboration, since lab work, engineering projects, and coding assignments frequently require working in teams.
STEM vs. STEAM
You may also see the term STEAM, which adds “Arts” to the acronym. STEAM curricula integrate humanities, visual arts, design, music, and new media into science and math instruction. The idea is that creative thinking and communication skills strengthen the application of technical knowledge. A STEAM approach might use data visualization or design principles to deepen understanding of a scientific concept, for example.
STEM focuses explicitly on hard scientific and technical skills. STEAM broadens the lens to include the soft skills (collaboration, creative problem-solving, communication) that employers increasingly value alongside technical competence. Both approaches teach the same core science and math content, but STEAM builds in more cross-disciplinary work.
Why STEM Courses Matter for Careers
STEM occupations are projected to grow 8.1% between 2024 and 2034, three times the 2.7% growth rate for non-STEM jobs. The pay gap is equally stark: the median annual wage for STEM occupations is $103,580, compared to $48,000 for non-STEM roles, according to the Bureau of Labor Statistics.
That wage premium applies across education levels. STEM-trained workers with a bachelor’s degree, a master’s, or even an associate’s degree in a technical field consistently out-earn their non-STEM peers. The growth is concentrated in computing, data analysis, and engineering roles, but STEM skills are increasingly embedded in healthcare, finance, agriculture, and manufacturing jobs that don’t carry an obvious “STEM” label.
For international students in the U.S., STEM designation carries an additional practical benefit. F-1 visa holders who earn a degree in a STEM-designated program can apply for a 24-month extension of their post-graduation work authorization, on top of the standard 12 months. That gives STEM graduates up to three years of work experience in the U.S. after finishing their degree.