2.3 Capitalization Rules

Why capitalization sits inside Conventions of Standard English

Conventions of standard English on the ATI TEAS 7 English and Language Usage section covers three mechanics families: spelling (Section 2.1), capitalization (this section), and punctuation (Chapter 3). Capitalization items rarely announce themselves. They hide inside a revision stem that shows four versions of the same clinical or academic sentence, where only one version capitalizes every proper noun and leaves every common noun alone.

The stakes in healthcare writing match the stakes on the exam. A chart entry that reads the patient takes tylenol looks careless, and a handout that reads Call The Clinic On Monday looks like a ransom note. Capitalization signals care, and the rule set is small enough to master in one sitting.

Rule 1: Sentence starts, the pronoun I, and quoted sentences

• Capitalize the first word of every sentence: The dressing is dry and intact.
• Capitalize the pronoun I wherever it appears: When I reassessed the site, I documented the finding.
• Capitalize the first word of a quoted complete sentence: The patient said, "I feel dizzy when I stand."
• Do not capitalize a quoted fragment that continues your own sentence: The patient described the pain as "crushing."

Colon carryover: when a colon introduces a list or a fragment, the next word stays lowercase (Gather three items: gloves, gauze, and tape). When a colon introduces a complete sentence, capitalizing that sentence's first word is standard academic practice (The lab result was clear: Potassium was critically low). Section 3.2 covers when a colon is legal at all; here, remember only that a colon does not automatically trigger a capital.

Rule 2: Proper nouns versus common nouns

A proper noun names one specific person, place, organization, or product and takes a capital. A common noun names a general category and does not.

High-frequency traps inside this family:

• Seasons stay lowercase; months and days do not. The cohort begins in the fall but The cohort begins in September.
• Directions stay lowercase; named regions are capitalized. Drive west on Main Street but She trained in the Midwest.
• Family words are capitalized only when used as a name. I asked Mom about the allergy list but I asked my mom about the allergy list.
• Academic subjects stay lowercase unless they are languages or a specific course title. She is taking anatomy, statistics, and Spanish but She is taking Anatomy and Physiology I.

Rule 3: Titles before and after names

This is the single most tested capitalization pattern in healthcare-flavored stems, because the same words flip case depending on position.

• Correct: Dr. Lopez reviewed the order.
• Correct: The doctor reviewed the order.
• Incorrect: The Doctor reviewed the order.
• Correct: We paged Charge Nurse Ruiz.
• Correct: We paged Ana Ruiz, the charge nurse on 4 West.

Rule 4: Diseases, drugs, and clinical nouns

Health-science writing has its own conventions, and TEAS stems use them because they separate careful writers from guessers.

Memory hook: if a single company owns the name, it earns a capital. If any manufacturer can produce it, it does not.

Rule 5: Title case for headings and works

When a stem shows the title of a paper, article, chapter, or patient handout, apply title case:

1. Capitalize the first and last words no matter what they are.
2. Capitalize all major words: nouns, pronouns, verbs, adjectives, adverbs, and subordinating conjunctions.
3. Keep articles (a, an, the), short prepositions (of, in, on, to, for, with), and coordinating conjunctions (and, but, or, nor) lowercase in the middle of the title.

• Correct: Preventing Falls in the Postoperative Adult
• Correct: A Guide to Safe Medication Administration
• Incorrect: Preventing Falls In The Postoperative Adult
• Incorrect: preventing falls in the postoperative adult (as a formal title)

Title case is for titles only. Capitalizing Every Word Of A Patient Instruction is a recurring distractor in "which version is correct" items, and it is always wrong for running prose.

Over-capitalization: the trap that catches strong writers

Under-capitalizing a proper noun is the obvious error. The subtler error—and the one TEAS distractors lean on—is over-capitalization: adding capitals to ordinary nouns because they feel important.

Importance does not create a capital. Only specificity does: one named person, one named place, one named organization, one named product, one named day or month.

A two-question test for any capital

1. Is this the first word of a sentence or of a quoted complete sentence? If yes, capitalize and stop.
2. Does the word name one specific entity that could appear on a sign, a badge, or a product label? If yes, capitalize. If it names a category, leave it lowercase.

Everything else—titles standing alone, seasons, compass directions, generic drug names, common conditions, and school subjects other than languages—stays lowercase.

Worked revision (mixed capitalization errors)

Draft: the Patient, mr. alvarez, was admitted to mercy general Hospital on a monday in the Spring with Pneumonia. dr. patel ordered Tylenol and told the Charge Nurse to recheck vitals. He is enrolled in the nursing program at valley college and takes anatomy and spanish.

Corrected: The patient, Mr. Alvarez, was admitted to Mercy General Hospital on a Monday in the spring with pneumonia. Dr. Patel ordered Tylenol and told the charge nurse to recheck vitals. He is enrolled in the Nursing Program at Valley College and takes anatomy and Spanish.

Walk each change:

Notice that the corrected version removes four capitals and adds nine. Both directions are tested.

Where capitalization shows up on test day

• Multiple choice: four versions of one sentence differing only in which words carry capitals.
• Hot spot: click the word that should be capitalized—or the one that should not be.
• Fill-in-the-blank: supply a word whose capitalization has to match the slot (Monday, not monday).
• Writing-process items: Section 7.1 lists capitalization as a proofreading target rather than a revising one, which is exactly why the rules must be automatic instead of debated.

Run the two-question test, resist the pull to capitalize important-sounding words, and this cluster becomes some of the fastest points available in the Conventions block.