LETTER ENGINEER HANDBOOK

Capitalization Rules for Kids

Capitalization means using an uppercase letter when an English rule requires one. Capital letters begin sentences and mark specific names, places, calendar words, holidays, languages, and some titles. Words that are common nouns usually stay lowercase. The goal is to decide which rule fits each word in its sentence.

View the rules Practice now

Find the capitalization changes

my friend lucas moved to texas in june.

My friend Lucas moved to Texas in June.

Sentence startPersonPlaceMonth

QUICK RULE MAP

When should a word be capitalized?

Use a capital when a rule applies. Keep the word lowercase when no capitalization rule applies.

CAPITALIZATION CONTROL BOARD9 RULES

Category	Rule	Correct	Common error
Beginning of a sentence	Capitalize the first word in every sentence.	The library opens at nine.	the library opens at nine.
The pronoun I	Always write the pronoun I as a capital letter.	Maya and I made a model.	Maya and i made a model.
Names of people	Capitalize a person's first, middle, and last name.	Jordan Lee joined our team.	jordan lee joined our team.
Specific places	Capitalize names of cities, states, countries, and named places.	We drove from Austin to New Mexico.	We drove from austin to new mexico.
Days and months	Capitalize days of the week and months of the year.	Our trip begins Monday, June 8.	Our trip begins monday, june 8.
Holidays	Capitalize the important words in holiday names.	School closes for Labor Day.	School closes for labor day.
Languages and nationalities	Capitalize the names of languages and nationalities.	Noah speaks Spanish and English.	Noah speaks spanish and english.
Titles before names	Capitalize a title when it comes directly before a person's name.	Professor Lee welcomed us.	professor Lee welcomed us.
Common nouns stay lowercase	Do not capitalize ordinary words unless another rule requires it.	My brother plays soccer every Saturday.	My Brother Plays Soccer Every Saturday.

RULE-BY-RULE GUIDE

Nine capitalization rules to practice

Read each rule, compare the examples, and notice why the capital letter belongs there.

Beginning of a sentence

Capitalize the first word in every sentence.

CorrectThe library opens at nine.

Fix itthe library opens at nine.

A capital letter signals that a new sentence has started, even when the first word is a common noun.

The pronoun I

Always write the pronoun I as a capital letter.

CorrectMaya and I made a model.

Fix itMaya and i made a model.

The pronoun I is capitalized wherever it appears in a sentence. Other pronouns, such as he and they, do not follow this rule.

Names of people

Capitalize a person's first, middle, and last name.

CorrectJordan Lee joined our team.

Fix itjordan lee joined our team.

A person's name identifies one specific person, so each main part of the name begins with a capital letter.

Specific places

Capitalize names of cities, states, countries, and named places.

CorrectWe drove from Austin to New Mexico.

Fix itWe drove from austin to new mexico.

A specific place name is a proper noun. General place words, such as city, park, and school, usually stay lowercase.

Days and months

Capitalize days of the week and months of the year.

CorrectOur trip begins Monday, June 8.

Fix itOur trip begins monday, june 8.

Monday and June are official calendar names. Seasons such as spring and winter usually remain lowercase.

Holidays

Capitalize the important words in holiday names.

CorrectSchool closes for Labor Day.

Fix itSchool closes for labor day.

A holiday has a specific name. Short connecting words may stay lowercase when they are part of a longer holiday name.

Languages and nationalities

Capitalize the names of languages and nationalities.

CorrectNoah speaks Spanish and English.

Fix itNoah speaks spanish and english.

Language and nationality names are proper nouns and proper adjectives, so they begin with capital letters.

Titles before names

Capitalize a title when it comes directly before a person's name.

CorrectProfessor Lee welcomed us.

Fix itprofessor Lee welcomed us.

Use a capital in President Lincoln or Dr. Rivera. Keep the title lowercase when it is general: the president or our doctor.

Common nouns stay lowercase

Do not capitalize ordinary words unless another rule requires it.

CorrectMy brother plays soccer every Saturday.

Fix itMy Brother Plays Soccer Every Saturday.

Important-looking words are not automatically proper nouns. Brother, plays, soccer, and every are common words in this sentence.

CONTEXT CHECK

Some words change with the sentence

A word is not always uppercase or always lowercase. Its job in the sentence decides which form is correct.

mom / Mom

KEEP LOWERCASE

My mom is cooking.

CAPITALIZE

Thanks, Mom!

Use lowercase after a word such as my. Capitalize Mom when it is used directly as a name.

president / President

KEEP LOWERCASE

The president gave a speech.

CAPITALIZE

President Lincoln gave a speech.

A general job title stays lowercase. A title directly before a name is capitalized.

school / School

KEEP LOWERCASE

Our school has a garden.

CAPITALIZE

Lincoln Elementary School has a garden.

A general place word stays lowercase. Every important word in a school's official name is capitalized.

seasons / calendar names

KEEP LOWERCASE

We hike in summer.

CAPITALIZE

We hike every June.

Seasons are usually common nouns, while days and months are specific calendar names.

FROM RULES TO PLAY

Practice the rule in three different ways

Choose the learning job you need: repair a sentence, classify a word in context, or apply mixed rules quickly.

01 / NOTICE AND FIX

Capitalization Repair

Correct every capitalization error in a complete sentence and read the rule feedback.

Open the repair workshop 02 / CLASSIFY THE RULE

Capitalization Sort

Use sentence context to decide whether a word belongs in CAPITALIZE or KEEP LOWERCASE.

Enter the sorting dock 03 / APPLY IT FAST

Capitalization Rush

Find mixed capitalization changes before time runs out and restore the city power grid.

Start the city rescue

FOR TEACHERS AND FAMILIES

A simple Grades 2-5 practice path

Use the guide as a quick reference before a game round, then ask learners to explain which rule caused each change. Short, repeated practice works well for classroom warm-ups, literacy stations, homework, and homeschool lessons.

Grade 2 focusSentence beginnings, names of people, and the pronoun I.
Grade 3 focusDays, months, holidays, cities, states, and countries.
Grades 4-5 focusTitles, named places, contextual family words, and unnecessary capitals.

RULE DESK FAQ

Capitalization questions students ask

Short answers for the rules that depend most on context.

Does every important word need a capital letter?

No. A word is capitalized because a rule requires it, not because it feels important. Common nouns such as teacher, school, brother, and soccer usually stay lowercase unless they begin a sentence or belong to a specific name.

Should mom and dad be capitalized?

Capitalize Mom or Dad when the word is used as a name, as in 'Thanks, Mom.' Use lowercase after words such as my, your, or our, as in 'My mom packed lunch.'

Are seasons capitalized?

The names of seasons are usually lowercase: spring, summer, fall, and winter. Capitalize a season only when it begins a sentence or appears in an official name or title.

Why are days and months capitalized?

Days and months are capitalized because Monday, Friday, January, and October are specific calendar names. They are proper nouns. General time words such as day, week, month, and season stay lowercase.

How can students practice capitalization rules?

Students can practice by correcting complete sentences, sorting words with context, and finding mixed capitalization errors quickly. Majuscape provides all three kinds of practice with an explanation after each mistake.