Is the IB Language B Individual Oral marked out of 30?

Yes, the Language B Individual Oral is marked out of 30 under the established mark scheme. Criterion A is worth 12 marks, while B1, B2 and C are each worth 6 marks. The four scores are added without applying separate weighting inside the oral. The resulting component mark contributes 25% of the final Language B grade at both SL and HL under the current course. It should not be converted directly into an overall IB subject grade because grade boundaries apply to the combined assessment components.

What is the difference between Criterion B2 and Criterion C?

Criterion B2 assesses the message communicated during the conversation, including relevance, appropriateness, breadth and depth. Criterion C assesses the interaction itself, including comprehension, sustained participation and independent contributions. A student might answer fluently and understand every question but provide shallow ideas, producing a stronger C score than B2 score. Conversely, a student may offer thoughtful content but require repeated prompting, which can limit Criterion C. Practise both by developing answers fully while also listening carefully and helping the conversation progress.

Do I lose marks in Criterion A every time I make a grammar mistake?

No, the Language B IO mark scheme does not apply a fixed deduction for each grammatical error. Markers consider the overall range, accuracy and communicative effect of your language across the oral. Occasional errors can still appear in a high-band response when they do not interfere with meaning. Repeated basic errors or mistakes that make ideas difficult to understand have a greater effect. Focus on controlled variety rather than trying to produce complicated grammar in every sentence.

Does a strong accent lower the Language B IO mark?

An accent does not automatically lower your score because the rubric does not require you to sound like a native speaker. Criterion A considers whether pronunciation and intonation obstruct, support or enhance communication. A noticeable accent can therefore coexist with a high mark when the speech remains consistently clear. Problems arise when individual sounds, stress or rhythm repeatedly change meanings or make phrases difficult to understand. Practising intelligibility, pacing and meaningful emphasis is more useful than attempting to erase your accent.

How much description should an SL student include?

SL students need enough description to establish what is visible and identify significant details. Description should then become a basis for interpretation rather than occupying the whole presentation. To access the highest B1 band, discuss explicit and implicit details, offer personal interpretations, and make clear links to a target culture. A useful sequence is visible detail, inferred message, prescribed theme, cultural example and wider significance. If most sentences merely list objects, people or colours, the response is unlikely to demonstrate sufficient engagement.

Does an HL student need to analyse literary techniques in the Language B IO?

HL students should discuss how precise details from the literary extract support their observations and opinions. Literary terminology can help identify those details, but the criterion does not reward a list of techniques without meaningful explanation. A strong response might explain how imagery, dialogue, tone, characterization or narrative perspective shapes an idea in the passage. The selected extract must remain central, although brief reference to the wider work can provide useful context. In practical terms, explain what the detail suggests, how it supports your interpretation, and why that interpretation matters.

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IB Language B Individual Oral Criteria Explained

IB Language Acquisition Individual Oral IB IB Grading

• 3 Oct 2026•11

IB Language B Individual Oral Criteria Explained

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IB Language B Individual Oral Criteria Explained | RevisionDojo

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IB Language B Individual Oral Criteria Explained

IB Language Acquisition Individual Oral IB IB Grading

• 3 Oct 2026•11

The IB Language B Individual Oral criteria divide the assessment into four scoring areas: Criterion A: Language, Criterion B1: Message-presentation, Criterion B2: Message-conversation, and Criterion C: Interactive skills-communication. Together, they produce a mark out of 30. Under the current course, the Individual Oral contributes 25% of the final Language B grade at both SL and HL.

Markers reward controlled language, developed ideas, engagement with the stimulus or extract, and the ability to sustain a genuine conversation. Confidence, memorization, accent, or isolated advanced vocabulary do not earn marks by themselves.

Language B IO mark scheme at a glance

Criterion	What is assessed	Marks
A: Language	Vocabulary, grammar, accuracy, pronunciation and intonation throughout the oral	12
B1: Message-presentation	Engagement with the SL visual stimulus or HL literary extract	6
B2: Message-conversation	Relevance, development, breadth and depth of answers	6
C: Interactive skills-communication	Comprehension, participation and independent contributions	6
Total	Complete Individual Oral performance	30

B1 evaluates the initial presentation, while B2 evaluates the ideas communicated during the subsequent conversation. The oral is internally assessed by your teacher, and a sample of recordings is externally moderated by the IB to maintain marking standards across schools.

Criterion A: Language, 12 marks

Criterion A assesses your spoken language throughout the complete oral. It covers vocabulary, grammatical range, accuracy, pronunciation, and intonation.

The broad progression through the bands is:

1-3: Limited vocabulary and basic structures, with errors or pronunciation problems that frequently obstruct meaning.
4-6: Generally appropriate language and some variety, although errors in more complex structures may disrupt communication.
7-9: Varied, task-appropriate vocabulary and effective control of basic and complex structures. Errors do not normally interfere with meaning.
10-12: Mostly accurate and highly effective language, with purposeful vocabulary, structures, pronunciation and intonation.

At HL, the highest band particularly emphasizes nuanced vocabulary and complex structures chosen to improve the message. Complexity is not automatically valuable, however. A controlled conditional used to explain a consequence is stronger than an elaborate sentence that becomes unclear.

An accent is not separately penalized. What matters is whether pronunciation and intonation obstruct communication or help express distinctions such as doubt, contrast, surprise or criticism.

Improving Criterion A

Practise language through useful functions, including comparing perspectives, explaining causes, speculating, qualifying opinions and drawing conclusions. Record a response and identify two recurring weaknesses, such as tense errors and repetitive adjectives. Correct those patterns in a second attempt rather than trying to repair everything simultaneously.

Criterion B1 at SL: Visual stimulus

At SL, B1 assesses how relevant and developed the presentation is in relation to the visual stimulus. It also assesses the effectiveness of connections to the target culture or cultures.

Responses in the 1-2 band are generally limited, irrelevant or dominated by incomplete description. In the 3-4 band, ideas are mostly relevant, with some interpretation and a generally appropriate cultural link. A 5-6 response uses explicit and implicit details consistently, integrating description, interpretation and clear target-culture connections.

Explicit details are directly visible, such as a protest sign or crowded train. Implicit details are reasonable inferences, such as environmental concern, unequal access, social tension or an attempt to influence public behaviour.

A strong presentation follows the chain detail, interpretation, theme, cultural context, significance. Rather than merely identifying bicycles in a city, explain how the image may promote sustainable transport, connect it to a specific target-language community, and consider what the policy suggests about public responsibility.

Avoid vague claims such as “This happens in Spanish-speaking countries.” Name a relevant place, policy, practice, event or perspective, then explain why the connection matters.

Criterion B1 at HL: Literary extract

At HL, the presentation begins with an extract from one of the literary works studied during the course. B1 assesses whether observations and opinions are relevant, developed, convincing and supported by details from the passage.

A 1-2 response engages superficially with the extract or relies heavily on plot summary. A 3-4 response develops some relevant observations with suitable references. A 5-6 response maintains convincing engagement and uses the extract effectively to support interpretations.

Context from the wider work can clarify the passage, but the selected extract must remain central. A rehearsed book review cannot reach the highest band if it barely addresses the chosen lines.

Support does not require lengthy quotations. Identify a precise word, image, contrast, action or narrative choice, then explain how it supports your interpretation. Unlike SL B1, the HL criterion does not impose a separate target-culture connection.

Criterion B2: Message-conversation

B2 assesses what you communicate during the follow-up discussion and broader thematic conversation. Markers consider whether answers are relevant, appropriate, developed, broad and sufficiently detailed.

Limited or partly relevant answers generally sit in the 1-2 band. Mostly relevant answers with some development fit 3-4. Consistently relevant, developed responses demonstrating breadth and depth can reach 5-6.

A long answer is not necessarily developed. Development comes from reasoning, evidence, comparison, qualification, consequences or personal interpretation. Use this sequence:

Answer the question directly.
Explain your reasoning.
Support the point with an example.
Extend it through a consequence, comparison or alternative view.

For a question about technology in education, do not stop at saying it provides information. Explain who benefits, offer an example, acknowledge unequal access or another limitation, and reach a qualified conclusion.

Criterion C: Interactive skills-communication

Criterion C assesses how you participate in the exchange. B2 rewards the content of answers, while C rewards comprehension, sustained participation and independent contributions.

Students in the 1-2 band may give disconnected answers or frequently require repetition. A 3-4 performance generally sustains comprehension and responds appropriately. A 5-6 performance consistently maintains the interaction and includes independent contributions.

An independent contribution moves the conversation forward without requiring the teacher to extract every idea. You might introduce an example, qualify an earlier claim, compare contexts or explain an implication before another question is asked.

Requesting clarification once does not automatically reduce the mark. Asking “Do you mean in my community or more generally?” can demonstrate an effective communication strategy. Repeatedly needing simplified questions, however, may indicate that comprehension is not consistently sustained.

How marks are selected within a band

The criteria are applied through an overall best-fit judgment. The marker identifies the band that most accurately describes the performance, then chooses a mark according to how fully and consistently its features are demonstrated.

One grammar mistake does not produce an automatic deduction, just as one impressive idiom does not guarantee the top of Criterion A. The marker considers the overall pattern of evidence across the relevant section or, for Criterion A, the entire oral.

A profile of 9/12 for A, 6/6 for B1, 4/6 for B2, and 5/6 for C would indicate strong language and presentation work but less consistent development in spontaneous answers.

Common misunderstandings

Fluency does not mean speaking quickly. A controlled pace is more effective than rushed, error-filled speech.
SL description alone is insufficient. Higher B1 marks require interpretation and meaningful cultural connections.
HL plot knowledge is not the main objective. Claims must be supported through the selected extract.
Memorization does not guarantee a high mark. It does little to prepare you for B2 and C.
B2 and C are different. Strong interaction can contain shallow ideas, while thoughtful content may still require excessive prompting.

A criterion-based practice routine

Use each recording for focused reviews:

Check Criterion A for vocabulary repetition, recurring grammar errors and unclear pronunciation.
Check B1 for relevance, interpretation, cultural links or evidence from the extract.
Check B2 for places where reasoning, examples or implications could be added.
Check Criterion C for direct responses, clarification strategies and independent contributions.
Repeat the task with two targeted improvements instead of rewriting a complete script.

RevisionDojo's Language B oral preparation guide provides timed practice structures. The Language B Individual Oral Grader organizes feedback by criterion, while Jojo AI oral practice supports unpredictable follow-up questioning for B2 and C.

Important note for future assessment sessions

These bands correspond to the established Language B mark scheme used before the revised course reaches first assessment in 2029. Students in the 2029 cohort should confirm the final criteria and procedures with their teacher. RevisionDojo's first assessment 2029 Language B oral guide explains the revised structure separately.

Conclusion

The Language B IO is marked through observable evidence rather than a general impression of confidence. Criterion A rewards controlled language, B1 rewards engagement with the stimulus or extract, B2 rewards developed ideas, and C rewards sustained interaction.

Preparation should therefore be criterion-specific. Record responses, diagnose the weakest area, and repeat the task with targeted improvements. RevisionDojo's oral grader and Jojo AI can support this practice alongside teacher guidance and the official rubric.