Technical Accuracy: Spelling, Punctuation, Grammar and Sentences

AO6 is the Assessment Objective for technical accuracy — vocabulary, sentence structures, spelling and punctuation. Under the specification it must make up 20% of the marks on every AQA English Language paper, which makes it one of the biggest single objectives in the whole qualification.

On each paper the writing task (Section B) is worth 40 marks, split like this:

Objective	Rewards	Marks
AO5	Content and organisation	24
AO6	Technical accuracy	16

So 16 of the 40 marks on each writing task come from how accurately and skilfully you write, before the examiner even weighs your ideas. Across two papers that is 32 marks resting on spelling, punctuation, grammar and sentence craft.

The mark scheme judges AO6 on five things: sentence demarcation (marking where sentences start and end), the range of punctuation, the variety of sentence forms used for effect, control of Standard English grammar, and spelling including ambitious vocabulary. The rest of this lesson takes each in turn.

The single fastest way to lift AO6 is to vary your sentence structures on purpose. Three types form the core.

• A simple sentence has one main clause — one subject, one verb, one idea. The rain fell.
• A compound sentence joins two main clauses of equal weight with a conjunction such as "and", "but" or "so". The rain fell and the streets emptied.
• A complex sentence adds a subordinate clause (one that cannot stand alone) to a main clause. As the rain fell, the streets emptied.

Type	Structure	Example
Simple	One main clause	The alarm rang.
Compound	Two main clauses joined	The alarm rang and everyone froze.
Complex	Main clause + subordinate clause	When the alarm rang, everyone froze.

The top AO6 level rewards a "full range of appropriate sentence forms for effect". That means moving deliberately between the three — a short simple sentence to land a point, a complex sentence to develop it, a compound to balance two ideas.

Length is a tool. A short sentence after several long ones hits hard. Read your paragraph and ask: does every sentence sound the same? If so, break the pattern.

Beyond the three main types, two techniques give your writing rhythm and control.

A minor sentence is short and grammatically incomplete, often with no main verb, used deliberately for impact: No warning. Nothing. Just the door, and then silence. Used sparingly, minor sentences create tension or emphasis. Used constantly, they read as errors, so keep them rare and intentional.

You can also vary how sentences begin. Starting every sentence with the subject ("I", "The", "It") makes writing monotonous. Open instead with:

• an adverb: Slowly, the handle turned.
• a subordinate clause: Because the lights were out, she felt her way along the wall.
• an -ing (present participle) phrase: Gripping the rail, he leaned into the wind.

Opening type	Example
Adverb	Quietly, the room settled.
Subordinate clause	Although she was tired, she pressed on.
Participle phrase	Turning the corner, I saw the crowd.

Varied openings and the occasional minor sentence signal deliberate craft — exactly the "range of sentence forms used for effect" the higher bands look for.

The top AO6 level asks for "a wide range of punctuation used with a high level of accuracy". Four marks of punctuation lift writing when used correctly.

• A colon (:) introduces an explanation, a list or a dramatic reveal. She wanted one thing: the truth.
• A semicolon (;) joins two closely related complete sentences without a conjunction. The rain had stopped; the damage was done.
• A dash (—) adds a sharp aside or a sudden turn. He knew the way — or thought he did.
• Parenthesis is extra information dropped into a sentence between a pair of commas, dashes or brackets. The house, empty for years, still smelled of woodsmoke.

Punctuation	Job	Example
Colon	Introduce or explain	There was only one option: run.
Semicolon	Link two related sentences	The plan was simple; the risk was not.
Dash	Sharp aside or turn	She smiled — for the first time in weeks.
Parenthesis	Add extra detail	The letter, written in haste, said little.

Accuracy beats ambition. A correctly placed semicolon impresses; a semicolon dropped where a comma belongs does the opposite. Only use punctuation you are confident you control.

Two more strands complete AO6: how your writing is organised on the page and the words you reach for.

Paragraphing shows control of structure. Start a new paragraph for a new idea, a new time, a new place or a new speaker. In descriptive and argument writing, a deliberately short one-line paragraph can also create emphasis. Signposting between paragraphs with discourse markers — "However", "In contrast", "Above all" — keeps the writing cohesive.

Spelling carries weight in every band. The top level looks for "a high level of accuracy in spelling, including ambitious vocabulary". Learn the words students most often misspell:

Often misspelt	Correct
definately	definitely
seperate	separate
neccessary	necessary
enviroment	environment
occured	occurred

Ambitious vocabulary means precise, well-chosen words rather than long ones for their own sake. "A menacing silence" beats "a very scary quiet". Choose a stronger word only when you can spell it and it genuinely fits — a misused ambitious word costs more than a plain one used well.

AO6 is marked in four levels. Knowing what separates them tells you exactly what to add to your writing.

Level	Marks	What it looks like
4	13–16	Consistently secure sentence demarcation; wide range of accurate punctuation; full range of sentence forms for effect; secure complex grammar; high spelling accuracy with ambitious vocabulary
3	9–12	Mostly secure demarcation; range of punctuation used mostly successfully; a variety of sentence forms; mostly controlled Standard English; generally accurate spelling of complex words
2	5–8	Mostly secure but sometimes inaccurate demarcation; some control of punctuation; attempts a variety of sentence forms; some Standard English; some accurate spelling of complex words
1	1–4	Occasional demarcation; some conscious punctuation; simple range of sentence forms; limited control of agreement; accurate basic spelling

The jump from Level 3 to Level 4 is consistency and range: sentence forms used across the whole piece for effect, punctuation that is both wide-ranging and accurate, and spelling that stays secure even on ambitious words.

To climb a level, do not write more — write more accurately and with more deliberate variety. One controlled complex sentence with a correct semicolon does more than three careless flourishes.

1. Comma splices

Joining two complete sentences with only a comma is one of the most common errors. The rain fell, the streets emptied. Fix it with a full stop, a semicolon, or a conjunction: The rain fell, and the streets emptied.

2. Reaching for punctuation you cannot control

A semicolon or colon dropped in the wrong place lowers your mark more than a plain full stop. Use only the punctuation you are sure of, and use it accurately.

3. Every sentence the same length

A wall of medium-length sentences all opening with the subject reads as flat. Vary length and openings deliberately; a short sentence after long ones creates impact.

4. Ambitious words used wrongly

Choosing a big word you cannot spell or do not quite understand backfires. Precise, correct vocabulary beats an impressive-looking word used inaccurately.

5. No time to proofread

AO6 marks are lost to slips a two-minute read would catch: missing capitals, dropped apostrophes, misspellings. Leave time at the end to check sentence demarcation and spelling before the exam finishes.