How Many Weeks in a School Year? Average Range Is 36–40

The number of weeks in a school year isn’t a single number—it depends on whether you count calendar weeks, teaching weeks, or country-specific minimums. In Ireland, secondary schools are open for at least 178 days each year, but only 167 of those are teaching days, according to the Association of Catholic Secondary Schools (ACCS).

Typical range: 36–40 weeks ·
Term-time days: 190–195 days ·
Equivalent term weeks: 38–39 weeks ·
Irish secondary academic year: 36 weeks

Five key facts, one takeaway: the answer depends on whether you count calendar weeks, term-time weeks, or minimum days.

Are there 40 weeks in a school year?

What the 36–40 week range means

• Most academic school years run between 36 and 40 weeks (OECD 2024 report on school year organisation).
• A 40-week school year is at the top end of the typical range (OECD).
• At five school days per week, 40 weeks equals about 200 school days.

The 40‑week figure appears frequently in international comparisons. The OECD includes several countries that schedule at least 40 weeks of school per year, placing Australia in that group. But many systems—especially in the U.S. and parts of Europe—land closer to 38 or 39 once teacher work days and holidays are subtracted.

How 40 weeks translate into school days

Forty weeks multiplied by five school days per week gives 200 days. But not every day is a teaching day. In Ireland, 12 of those days are reserved for state examinations, reducing instructional time to 167 days even in a 178‑day opening period (ACCS). The same principle applies in other countries: the gap between “school open” days and “instruction” days can vary by 10 percent or more.

What this means: The 40-week figure is real but rare in practice. Most schools end up closer to 38–39 teaching weeks once non-instructional days are removed.

Is there 36 weeks in a school year?

Ireland’s 36-week academic year

• Ireland’s academic year is described as 36 weeks for secondary school (ACCS, representing Irish second-level schools).
• Irish post-primary schools must provide a minimum of 182 days (gov.ie Primary Circular 11/95).
• A 36-week count is lower than the 38–39 weeks implied by the typical 190–195 school-day figure.

Ireland’s Education Act 1998 defines the school year as a twelve‑month period starting between 1 July and 1 October (CPSMA — Education Act, 1998). In practice, the Department of Education sets term dates that align with the 36‑week pattern. Future Learning Ireland notes that the program from 1st to 6th Year runs for 36 weeks of instruction.

182-day minimum and term dates

The INTO circular standardises the Irish school year at 182 days for post‑primary, with term dates set through 2026 (gov.ie Primary Circular 11/95). A 36‑week academic year at five days per week would produce 180 days—close but not identical to the 182‑day minimum. The extra two days account for staff training or parent‑teacher meetings built into the calendar.

The implication: Ireland’s 36-week label is accurate for the academic calendar span, but teaching weeks are fewer once exam days and non‑instructional days are removed.

How many weeks are in a school year in Australia?

Australia’s four-term structure

• Australian school years are commonly organised into four terms (Wikipedia — Academic term).
• The total usually sits near the 40-week end of the 36–40 week range (OECD 2024 comparison).
• Exact start and end dates vary by state and territory (Wikipedia — Academic year).

The Australian academic year generally starts in late January or early February and finishes in early or mid‑December. Each term is roughly 10 weeks long, with two‑week breaks between terms in most states. The Northern Territory schedules a one‑week break after Term 1 and a three‑week break after Term 2, showing the variation within the country.

State-by-state differences

State education departments set their own term dates for government schools. Victoria’s 2026 calendar, for example, runs Term 1 from late January to early April, and Term 4 from early October to mid‑December (Victoria Government — school term dates and holidays). Tasmania’s 2026 calendar shows a similar pattern, with Term 1 starting in early February and Term 4 finishing in mid‑December (Tasmanian Department for Education — school terms and holidays). The result is roughly 40 calendar weeks from start to finish, but the term‑time count—excluding holidays—lands around 40 weeks of instruction when breaks are factored out. The pattern: Australia’s four-term model naturally pushes the school year toward the top of the 36–40 week range, but the actual teaching time varies with state holiday policies.

Three jurisdictions, three different numbers. Here’s how they stack up.

How many weeks of school in Victoria?

Victorian term weeks at a glance

• Victoria uses a four-term school calendar (Victoria Government — school term dates and holidays).
• Victoria’s weekly total is measured within the same national term structure as other Australian states.
• Holiday breaks are counted separately from term weeks.

In 2026, Victorian government schools open on Tuesday 27 January (students start Wednesday 28 January) and close on Friday 18 December. Between those dates there are four terms, each separated by holiday breaks. The total span from first day of Term 1 to last day of Term 4 is about 47 weeks, but the term‑time weeks—when school is actually in session—add up to roughly 40.

How Victoria fits the national pattern

Victoria’s term structure mirrors the Australian national model: four terms of about 10 weeks each. The OECD 2024 report confirms that Australia is among the countries with at least 40 school weeks per year, so Victoria’s weekly total falls within that benchmark.

What this means: Victoria’s school year fits the national pattern, but without an official weekly count, parents should calculate from their specific term start and end dates.

How many weeks are in a school year without breaks?

Teaching weeks vs term-time weeks

• School-year totals are usually expressed in term-time weeks, not calendar weeks.
• A break-free count excludes holiday weeks from the total (Wikipedia — Academic term).
• Around 190–195 school days translate to roughly 38–39 weeks of teaching.

When people ask “how many weeks in a school year without breaks,” they typically want the number of weeks when students are actually in class. That figure is lower than the 40‑week calendar span because it excludes half‑term breaks, Easter, summer, and other holidays. For a school that operates 190 days, the break‑free teaching‑week count is 38 (190 ÷ 5). For 195 days, it is 39.

Teaching days: 190–195 ·
Teaching weeks (5-day week): 38–39 ·
Calendar weeks: 36–40

Break-free week calculation

To calculate break‑free weeks, start with the total number of school days in your district. Divide by five (the typical school week). That gives the number of teaching weeks. For example, a US district with 180 school days yields 36 teaching weeks. An Irish secondary school with 167 teaching days yields about 33.4 teaching weeks—well below the 36‑week academic year label.

The trade-off: The break-free count is the most honest measure of instruction time, but it’s rarely used by schools because holiday weeks are part of the academic calendar.

Three jurisdictions, three different numbers. Here’s how they stack up.

“A minimum of 28 hours of instruction per week is required for Irish second-level schools.”

Association of Catholic Secondary Schools (ACCS)

“Australia is listed among countries with at least 40 school weeks per year.”

OECD 2024 report on school year organisation

For parents and educators planning the school year, the choice is clear: use the 38–39 teaching week figure for instruction planning, or risk overcounting classroom time. For those comparing countries, the 36–40 week range is just the starting point—the real difference lies in how many of those weeks are actually spent teaching.

Related reading: How is the school year organised in OECD countries? · Academic year (Wikipedia)

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