i Before e

You may know the rhyme: "i before e, except after c, or when sounding like a, as in neighbor and weigh." It's useful, but it has a lot of exceptions. Here's the reliable version: ie for the long e sound (piece, field), ei after c (receive) and ei for the long a sound (eight).

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The rule, made reliable

The rhyme works best when the letters say long e, as in see. Then it's usually ie: piece, field, believe, chief, niece, thief. Right after a c, it flips to ei: receive, ceiling, receipt, deceive.

When the letters say long a, as in day, it's ei: eight, weigh, neighbor, vein, sleigh. Many other words, like their, weird, seize, either, science and friend, don't follow the rhyme at all, so they're learned as tricky words.

Long e sound: ie (piece), but ei after c (receive).
Long a sound: ei (eight, weigh).

In 4th and 5th grade, kids are expected to spell grade-level words correctly and check a dictionary when unsure (L.4.2d, L.5.2e). For other common spelling traps, see commonly misspelled words.

ie and ei words

Listen to the sound the two letters make.

PatternSoundWords
ielong epiece, field, believe, chief, niece, thief, shield, yield
ei after clong ereceive, ceiling, receipt, deceive, conceit
eilong aeight, weigh, neighbor, vein, sleigh, freight, reign
ielong ipie, tie, lie, cried (y changed to i)
Exceptions (learn by heart)varioustheir, weird, seize, either, neither, protein, science, friend, ancient

Words where y changed to i, like cried and babies, aren't really part of this rule. See change y to i.

ie and ei in sentences

The ie or ei is highlighted.

  1. May I have a piece of cake?
  2. We played in the field.
  3. Did you receive my letter?
  4. Look at the ceiling.
  5. I have eight marbles.
  6. Our neighbor has a dog.
  7. I believe you.
  8. That is a weird sound.
  9. The thief ran away.
  10. Their house is blue.

Examples 8 and 10, weird and their, are exceptions to learn by heart.

How to teach i before e

Five short steps, about 10 minutes each.

  1. Listen to the sound. Long e (piece) or long a (eight)?
  2. Long e? Think ie. piece, field, believe.
  3. After c? Flip it. receive, ceiling.
  4. Long a? Use ei. eight, weigh, neighbor.
  5. Keep a tricky list. their, weird, seize, either: practice in writing.

Common mistakes and how to fix them

MistakeWhy it happensHow to fix it
Writes peiceFlipping the letters.Long e, not after c: ie. A piece of pie.
Writes recieveForgetting the c part.After c, it's ei: receive.
Writes wierdFollowing the rhyme on an exception.Weird is weird! Learn it by heart.
Writes thierFollowing the rhyme on an exception.Their is a tricky word: t-h-e-i-r.

Practice: i before e quiz

10 questions. Your child can tap the speaker to hear a question read aloud. The first try on each question counts toward the score.

  1. 1.Which spelling is right?

    Show answer

    piece.

  2. 2.Which spelling is right?

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    receive.

  3. 3.Which spelling is right?

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    eight.

  4. 4.Which spelling is right?

    Show answer

    believe.

  5. 5.Which word follows the after c part of the rule?

    Show answer

    ceiling.

  6. 6.Which spelling is right?

    Show answer

    their.

  7. 7.Tap the word with ie.

    .

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    field.

  8. 8.Which spelling is right?

    Show answer

    weird.

  9. 9.What sound does ei make in neighbor?

    Show answer

    Long a.

  10. 10.Which spelling is right?

    Show answer

    chief.

i Before e worksheet (free PDF)

Page 1 of the i before e worksheet: fill in ie or ei for ten words and sort words by pattern

i Before e Worksheet, 3rd–5th grade

Fill in ie or ei, sort words by pattern, fix common misspellings and write sentences with tricky words. Prints on US Letter paper, with an answer key.

Download the PDF

Try it at home

What comes next

Next: commonly misspelled words. Earlier: change y to i. All rules: spelling rules for kids.

Last reviewed: November 11, 2026

Questions parents ask

What is the i before e rule?

i before e except after c, or when sounding like a as in neighbor and weigh. It works best for words with a long e sound.

Is the i before e rule true?

Partly. It's reliable for long e words (piece, receive), but many words like their, weird and science don't follow it.

How do you spell receive?

r-e-c-e-i-v-e. After c, use ei.

What are exceptions to i before e?

their, weird, seize, either, neither, protein, science, ancient and friend, among others.

What grade learns i before e?

Usually 3rd or 4th grade.