Why do JLPT N1 learners confuse 課外 with 決算?

Both words occupy adjacent semantic territory, which is exactly why the JLPT uses them as distractors for each other on multiple-choice items. The fastest way to stop confusing them is to study them as a pair, write a one-sentence contrast in your own words, and drill the pair specifically rather than each word in isolation.

Is 課外 or 決算 more common on JLPT N1?

Both appear in the JLPT N1 curriculum and either may show up on a given exam. Don't try to predict which one the test will choose — learn to distinguish them and you'll be safe regardless. Both belong to the General Adjectives (3) theme of N1 vocabulary.

How do I practice this confusion pair?

Free option: visit /try and pick a confusion drill. Paid option: none — JLPT Mastery is free during launch. Whichever route you take, the engine specifically re-tests pairs you've gotten wrong rather than rotating through general vocabulary review.

JLPT N1 · Advanced · Meaning confusion

課外 vs 決算

Q: What's the difference between 課外 and 決算?

課外 (かがい) means "extracurricular" and 決算 (けっさん) means "balance sheet, settlement of accounts". Both are formal administrative terms. Learners might confuse extracurricular (課外) activities with the formal settlement of accounts (決算) when reading about school budget allocations or club activity reports.

Why JLPT N1 learners mix up 課外 (かがい, “extracurricular”) and 決算 (けっさん, “balance sheet, settlement of accounts”).

課外

かがい

extracurricular

na-adjective

決算

けっさん

balance sheet, settlement of accounts

na-adjective

Theme: General Adjectives (3)JLPT N1

Why these get confused

Both are formal administrative terms. Learners might confuse extracurricular (課外) activities with the formal settlement of accounts (決算) when reading about school budget allocations or club activity reports.

How to tell them apart

Anchor on the meaning, not the form. 課外 (extracurricular) and 決算 (balance sheet, settlement of accounts) live in adjacent semantic territory. Memorize the boundary, not just each word.
Read the example sentences below. Seeing each word in its natural context builds a faster lookup than studying the dictionary form alone.

In a sentence

課外 (extracurricular)

それでは後ほどうかがいます。
そこには誰かがいる。

決算 (balance sheet, settlement of accounts)

決算報告を申し上げます。
決算報告を申し上げます。

How JLPT tests this pair

On JLPT N1, this pair shows up as a vocabulary meaning question. You see one word and pick its English equivalent from four options — one of which will be the other word in this pair, chosen as a distractor precisely because of the overlap.

Sample item

「課外」の意味は？