Fine-Tuning the Medium of Instruction: What It Means in Your Classroom

Quick answer: Fine-tuning lets a secondary school choose Chinese or English as the medium of instruction subject by subject and class by class, based on a school-based plan rather than a single fixed rule. For a teacher, this means the same subject can run in English in one class and in Chinese in a parallel class, and your planning has to account for whichever medium your own timetable gives you.

What does fine-tuning actually change at school level?

Since the 2010/11 school year, secondary schools have set their own medium of instruction through school-based plans rather than following one blanket policy. A school judges its own students' ability, its teachers' capacity to teach a subject in English, and the support it can put in place, then decides which classes or subjects run in English and which run in Chinese.

This means two schools down the same road can make different choices, and the same school can shift its plan from one cohort to the next as circumstances change. Neither choice is treated as better; both are legitimate school-based decisions under the policy.

What does this mean for planning a subject lesson?

If your class is designated English-medium, plan the lesson expecting students to read, discuss and write about the content in English, and build in the vocabulary support that makes this realistic. If a parallel class is Chinese-medium, the content and outcomes stay the same, but the language scaffolding you built for the English-medium class will not simply transfer across.

The safest approach is to separate content mastery from language mastery in your own planning. Decide first what students need to understand about the topic, then decide what language is needed to show that understanding in the class's actual medium.

The English Vocabulary Trainer – Grade 3 XXL is organised by topic rather than by grammar point, which makes it easy to pull just the vocabulary set relevant to your current unit into an English-medium lesson.

How much English can a non-qualifying school actually offer?

Schools that do not meet the full criteria for English-medium teaching can still offer up to a quarter of total teaching time in English for selected subjects, sometimes called partial or "EMI-lite" provision. In practice this usually means one or two subjects run in English while the rest stay in Chinese.

If you teach one of those selected subjects, treat the lesson as a genuine English-medium lesson rather than a bilingual mix, since mixing languages mid-explanation tends to confuse students more than committing to one medium and scaffolding it properly.

How do you handle a class that moves between mediums across the years?

A school's plan can shift a subject's medium from one year group to the next, so a cohort that had Chinese-medium science in Secondary 1 might meet English-medium science in Secondary 2. When this happens, do not assume prior vocabulary knowledge in English exists just because the content itself is familiar.

Run a short vocabulary check in the first week of the new medium, using key terms from the previous year's unit, before assuming students can transfer their existing content knowledge into the new language. The Grammar & Punctuation Practice pack is a quick way to confirm the sentence-level basics are in place before layering subject vocabulary on top.

How do you differentiate across an English-medium and Chinese-medium version of the same subject?

Approaching: a bilingual glossary of the unit's key terms, used as a reference rather than a crutch for every sentence.

On level: full English-medium instruction with a visible word bank for the unit's five or six core terms.

Above level: independent reading of an English-medium extension text on the same topic.

What goes wrong when schools apply fine-tuning inconsistently?

First, a subject gets labelled English-medium on paper but taught in a mix of both languages in practice, which leaves students without a stable expectation either way. Second, teachers assume a school-wide policy exists when the actual plan varies by class or by year group, and lessons get built on the wrong assumption. Third, a change in medium between year groups goes unplanned for, so students face a sudden jump in language demand with no scaffolding built in.

Frequently asked questions

Is fine-tuning an EDB-mandated curriculum change?

It is a medium-of-instruction policy, not a curriculum change, and these materials are not an EDB publication and not vetted by any examination authority. Confirm your own school's current plan before assuming a class's medium.

Can a school change its medium-of-instruction plan mid-year?

Plans are generally set per cohort in advance, so a mid-year change would be unusual; check with your panel head or timetable coordinator if you are unsure.

Does fine-tuning apply to primary schools as well?

The fine-tuning policy as described here applies to secondary schools; primary practice varies by school in its own way.

What is the maximum English teaching time for a non-qualifying school?

Up to roughly a quarter of total teaching time for selected subjects, though the exact arrangement is set at school level.

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