To help participants find the right classification for their projects, the categories and subcategories recognized by the International Science and Engineering Fair (ISEF) are listed here. For additional information and definition of categories, visit the ISEF web site.
Animal Sciences
- Development
- Ecology
- Animal Husbandry
- Pathology
- Physiology
- Population Genetics
- Systematics
- Other
Behavioral & Social Sciences
- Clinical & Developmental Psychology
- Cognitive Psychology
- Physiological Psychology
- Sociology
- Other
Biochemistry
- General Biochemistry
- Metabolism
- Structural Biochemistry
- Other
Cellular and Molecular Biology
- Cellular Biology
- Cellular and Molecular Genetics
- Immunology
- Molecular Biology
- Other
Chemistry
- Analytical Chemistry
- General Chemistry
- Inorganic Chemistry
- Organic Chemistry
- Physical Chemistry
- Other
Computer Science
- Algorithms, Data Bases
- Artificial Intelligence
- Networking and Communications
- Computational Science
- Computer Graphics
- Software Engineering., ProgrammingLanguages
- Computer System, Operating System
- Other
Earth & Planetary Science
- Climatology, Weather
- Geochemistry, Mineralogy
- Paleontology
- Geophysics
- Planetary Science
- Tectonics
- Other
ENGINEERING: Electrical & Mechanical
- Electrical Eng., Computer Eng., Controls
- Mechanical Engineering,Robotics
- Thermodynamics, Solar
- Other
ENGINEERING: Materials & Bioengineering
- Bioengineering
- Civil Engineering, Construction Eng.
- Chemical Engineering
- Industrial Engineering, Processing
- Material Science
- Other
Energy & Transportation
- Aerospace and Aeronautical Engineering, Aerodynamics
- Alternative Fuels
- Fossil Fuel Energy
- Vehicle Development
- Renewable Energies
- Other
Environmental Management
- Bioremediation
- Ecosystems Management
- Environmental Engineering
- Land Resource Management, Forestry
- Recycling, Waste Management
- Other
Environmental Sciences
- Air Pollution and Air Quality
- Soil Contamination and Soil Quality
- Water Pollution and Water Quality
- Other
Mathematical Sciences
- Algebra
- Analysis
- Applied Mathematics
- Geometry
- Probability and Statistics
- Other
Medicine and Health Sciences
- Disease Diagnosis and Treatment
- Epidemiology
- Genetics
- Molecular Biology of Diseases
- Physiology and Pathophysiology
- Other
Microbiology (Projects covering this material are not permitted in the elementary and middle school levels, grades 4-8)
- Antibiotics, Antimicrobials
- Bacteriology
- Microbial Genetics
- Virology
- Other
Physics and Astronomy
- Atoms, Molecules, Solids
- Astronomy
- Biological Physics
- Instrumentation and Electronics
- Magnetics and Electromagnetics
- Nuclear and Particle Physics
- Optics, Lasers, Masers
- Theoretical Physics
- Theoretical or Computational Astronomy
- Other
Plant Sciences
- Agriculture/Agronomy
- Development
- Ecology
- Genetics
- Photosynthesis
- Plant Physiology (Molecular, Cellular,Organismal)
- Plant Systematics, Evolution
- Other

