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The biology Praxis test and other science tests

The biology Praxis test is Biology (5236): 150 multiple-choice questions in 2.5 hours, $130, at home or at a test center. ETS also has Chemistry (5246), Physics (5266), General Science (5436), Middle School Science (5442) and Earth and Space Sciences (5572), and states differ on which one a science license needs.

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Updated October 2026 · Written from official sources, listed at the bottom of this page

What’s on the biology Praxis test?

CategoryQuestionsShare
Nature and Impact of Science and Engineering1913%
Cell Biology: Cell Structure and Function3322%
Genetics and Evolution3926%
Diversity of Life and Organismal Biology3020%
Ecology: Organisms and Environments2919%

ETS says more than 40% of the questions involve a science and engineering practice, and about 25% apply content to a task of teaching science.

ETS: Study Companion, Biology (5236) (PDF) ↗ETS: Biology (5236) ↗

The other science Praxis tests

TestTimeQuestionsFee
Chemistry (5246)2 h 30 min125$130
Physics (5266)2 h 30 min125$130
General Science (5436)2 h 30 min135$130
Middle School Science (5442)150 min125$120 on its page; the Bulletin says $130
Earth and Space Sciences (5572)2 h 30 min125$130

None of them needs a calculator. On Chemistry the periodic table is available as a help screen. Earth and Space Sciences: Content Knowledge (5571) is no longer on ETS’s test list; 5572 is the current version.

ETS: Chemistry (5246) ↗ETS: General Science (5436) ↗ETS: Middle School Science (5442) ↗

Which science test does your state want?

  • Louisiana: a separate test for biology, chemistry, general science and physics for grades 6-12, and Middle School Science (5442) for grades 4-8. Earth and environmental science needs 30 semester hours instead of a test.
  • Colorado: one Science (6-12) endorsement with General Science (5436), and no separate biology test.
  • New Jersey and Pennsylvania: Biology (5236) for biology.
Louisiana →Colorado →New Jersey →Pennsylvania →

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Everything else, in one place

OverviewThe Praxis exam: Core, Subject Assessments and your state’s rulesScoresPraxis scores: how they work and when you get themSign upPraxis test sign up: how to register and scheduleCostHow much does the Praxis test cost?At homeCan you take the Praxis test online at home?Praxis CorePraxis Core: the reading, writing and math testsSubject testsPraxis Subject Assessments: the tests for your teaching fieldPLTPraxis PLT: Principles of Learning and TeachingElementary educationElementary education Praxis tests: 5001 and the new FundamentalsEarly childhoodThe early childhood Praxis testSpecial educationSpecial education Praxis testsParaProThe Praxis paraprofessional test: ParaPro and ParaPathwaysSLP and audiologyThe SLP Praxis and the audiology PraxisReading testsPraxis reading specialist and teaching reading testsESOLThe Praxis ESOL testMathMath Praxis testsSocial studiesSocial studies Praxis testsEnglishPraxis English language arts testsPE and healthPraxis physical education and health testsSpanishThe Spanish Praxis testMusic and artArt and music Praxis testsBusiness and CTEBusiness education Praxis and other career and technical testsSchool psychologistThe Praxis school psychology testSchool counselorThe school counselor Praxis testSchool leadershipSLLA and other Praxis tests for principalsPennsylvaniaPennsylvania Praxis tests and scoresNorth CarolinaPraxis in North CarolinaMissouriMissouri Praxis testsLouisianaLouisiana Praxis tests and required scoresTennesseeTennessee Praxis testsNew JerseyNew Jersey Praxis tests and scoresColoradoColorado Praxis tests and scoresConnecticutConnecticut Praxis requirementsNevadaNevada Praxis requirementsBy statePraxis passing scores and requirements by stateIs it hard?Is the Praxis hard?Contact ETSETS Praxis customer service: how to reach ETSTest centersWhere to take the Praxis examStudy guideThe official Praxis study guide: ETS’s Study CompanionPractice testFree Praxis practice test: 20 Core-style questionsWhere to learnPraxis test prep: courses, apps and free official materialStudy plannerHow to study for Praxis Core
Sources: ETS, Louisiana Department of Education, Colorado Department of Education and 10 more. Checked October 2026.

Rules and fees can change, so check the official site before your test.