Canada’s math scores are in decline — and the Canada math scores decline has been measurable for two decades. It is not a crisis, but it is a slow, sustained drop in mathematical achievement that is now visible in international comparisons, provincial assessments, and the experiences of parents watching their children struggle with content that should be manageable.
This is not a story about failing schools or incompetent teachers. It is a story about policy decisions, curriculum changes, and a complicated set of trade-offs — and it has real implications for students in classrooms right now. Understanding what the data shows is useful. Understanding what it means for your child specifically is more useful still.
What the International Data Shows About Canada’s Math Scores Decline
PISA scores: a two-decade decline
The Programme for International Student Assessment (PISA), administered by the OECD every three years to 15-year-olds across participating countries, is the most rigorous international benchmark available for comparing student achievement across education systems. The Canada math scores decline is most clearly documented here.
Canada’s PISA mathematics scores tell a consistent story. In 2003, Canada scored 532 in mathematics — well above the OECD average of 500 and among the top performers internationally. By 2022, Canada’s mathematics score had fallen to 497 — below the OECD average for the first time.
That is a 35-point drop over roughly 20 years. In PISA terms, researchers generally estimate that 30–40 points corresponds to approximately one year of schooling. Canada’s math scores decline, on this measure, represents the equivalent of a year of mathematical learning lost across its student population over two decades.
The decline is not uniform across provinces. Quebec has maintained stronger mathematics performance than the Canadian average and declined less sharply. Ontario, BC, and Alberta have each seen more pronounced drops. But the national trend is clear and consistent across every PISA cycle since 2003.
TIMSS: a similar picture
The Trends in International Mathematics and Science Study (TIMSS), which assesses Grade 4 and Grade 8 students, shows a broadly consistent picture. Canadian Grade 8 students, who scored well above the international median in 2003, have seen a gradual erosion in ranking over subsequent cycles. The trajectory is less dramatic than PISA but points in the same direction.
Canada vs peer countries
The countries that have improved or maintained mathematics performance over the same period — Singapore, Japan, South Korea, Estonia, the Netherlands — share some common characteristics: a coherent national mathematics curriculum, strong emphasis on mathematical reasoning and problem-solving from the early years, and teacher preparation that emphasises deep subject knowledge rather than only pedagogical technique.
Canada, by contrast, has 13 separate provincial and territorial curricula with varying emphases and no national mathematics standard. The fragmentation is not the cause of the decline, but it makes coordinated response difficult.
What the Provincial Data Shows About Math Scores Decline in Canada
Ontario
Ontario’s EQAO assessments — which test Grade 3, Grade 6, and Grade 9 students annually — provide the most granular longitudinal picture of any Canadian province. The Grade 6 EQAO mathematics results are particularly informative: the percentage of Ontario students meeting or exceeding the provincial standard in mathematics fell from roughly 61% in 2009 to 49% in 2022-23 — meaning more than half of Ontario Grade 6 students are not meeting the expected standard for their grade.
Grade 9 EQAO mathematics results, introduced as a standardised assessment for the destreamed MTH1W course in 2021, show similar patterns. In the first year of province-wide reporting, roughly 75% of students met the provincial standard — but this figure varies dramatically by school board and demographic context.
The introduction of destreaming — removing the academic/applied split in Grade 9 mathematics — was designed to improve equity and outcomes for students who had been systematically placed in less rigorous pathways. Whether it is achieving that goal is actively debated. What is clear is that the transition created challenges for students across the ability spectrum: stronger students moving faster than the new unified course assumed, weaker students finding the content level higher than the applied stream provided.
For more on Ontario’s EQAO assessments and what they measure, see our EQAO Grade 3 complete guide, EQAO Grade 6 complete guide, and EQAO Grade 9 complete guide.
Alberta
Alberta’s Grade 6 Provincial Achievement Test (PAT) results in mathematics have shown a similar downward trend over the past 15 years. The canada math scores decline pattern is visible here too — the province’s historically strong mathematics performance has eroded alongside curriculum changes that emphasised discovery-based learning and reduced explicit instruction in foundational number skills.
Alberta has since partially reversed some of these curriculum changes, reinstituting more explicit instruction in arithmetic and basic number operations in the early grades following significant parent and teacher pushback. Whether these changes will translate into measurable improvement in PAT and PISA results is a question that will take several years of data to answer.
British Columbia
BC’s mathematics results in international assessments have declined alongside other provinces. The province introduced a new curriculum in 2016 that placed greater emphasis on mathematical inquiry and reduced the prescriptiveness of content expectations — changes that were welcomed by some educators and criticised by others, particularly for the primary years where foundational arithmetic skills need deliberate instruction.
Quebec
Quebec’s relative resilience against the Canada math scores decline — it remains the highest-performing province in PISA mathematics — is often attributed to its more coherent provincial curriculum, stronger culture of mathematics instruction, and a tradition of rigorous secondary mathematics that includes a distinct mathematics sequence more aligned with European models than English Canada’s. Quebec’s CÉGEP system also means students encounter serious mathematics before university in a way that Ontario’s pathway does not fully replicate.
What Is Driving Canada’s Math Scores Decline?
Researchers, educators, and policymakers disagree about the causes of the canada math scores decline — which is itself informative. The decline is real and measurable; what produced it is contested. The most credible accounts identify a combination of factors.
The shift away from explicit instruction in foundational skills
Through the 1990s and 2000s, many Canadian provinces adopted mathematics curriculum approaches that emphasised mathematical exploration, discovery, and conceptual understanding over direct instruction in arithmetic procedures. The intention was to produce students who understood mathematics rather than merely calculated — a genuinely worthwhile goal.
The problem was implementation. Moving away from explicit instruction in arithmetic fundamentals — addition and subtraction algorithms, multiplication tables, place value — without ensuring that conceptual understanding replaced procedural fluency as a genuine foundation produced, in many classrooms, students who had neither. The pendulum swung from “drill without understanding” toward “exploration without mastery,” and many students fell through the gap.
Inconsistent curriculum across provinces
With 13 separate curricula and no national standard, the range of what Canadian students are expected to know and when varies significantly. A Grade 4 student in Saskatchewan, Ontario, and British Columbia encounters different content, in different sequences, assessed through different methods. Research on mathematics learning is clear that a coherent, well-sequenced curriculum matters — and Canada’s fragmentation makes coherence difficult to achieve.
Calculator dependency in early grades
Some provinces introduced calculator use in the early elementary years as part of broader technology integration in classrooms. The concern among mathematics researchers is that early calculator use, before arithmetic fluency is established, may reduce the development of the number sense and mental arithmetic ability that underpins all subsequent mathematical learning. This is contested — but the correlation between provinces that restricted early calculator use and those that maintained stronger mathematics results is worth noting.
Teacher mathematics content knowledge
Canadian elementary school teachers are generalists — they teach every subject in the curriculum. The implication for mathematics is that a teacher whose own mathematics background is weak will teach mathematics less effectively than one with deep subject knowledge, regardless of their pedagogical skill. Several studies of Canadian teacher preparation programmes have identified gaps in the mathematical content knowledge of graduating elementary teachers.
COVID-19 learning disruption
The 2022 PISA results, the most recent available, captured students who experienced significant schooling disruption during the pandemic. Mathematics learning is particularly sensitive to disruption because it is cumulative — gaps left by school closures compound in a way that is less pronounced in subjects like English literature. Disentangling pandemic-related disruption from longer-term structural decline in the data is methodologically difficult, but most researchers believe both factors are real.
What the Canada Math Scores Decline Means for Your Child Specifically
National and provincial averages are useful for understanding systemic trends. They are not useful for understanding what is happening to a specific child in a specific classroom.
The most important thing the data tells a parent is not “Canadian math scores are falling” — it is that mathematical achievement is more variable across schools, classrooms, and students than most parents assume. A child in a school that teaches mathematics well, with a teacher who knows the subject deeply, can have a fundamentally different educational experience from a child at a school three kilometres away. The national average conceals an enormous range.
This variability is partly what drives the growth of structured after-school mathematics programmes in Canada. Parents who are not confident that their child’s school is providing strong foundational instruction in mathematics seek supplemental support — not because something is wrong with their child, but because they understand that mathematical foundations built in Grades 1 to 6 determine the ceiling for everything that follows.
The compounding nature of mathematical learning
Mathematics is more cumulative than any other school subject. A gap left unaddressed in Grade 3 number sense is a larger gap in Grade 5, a significant obstacle in Grade 7, and a structural barrier in Grade 9. Unlike history, where a missed unit can be learned in isolation, a gap in fraction fluency affects algebraic reasoning affects equation solving affects calculus preparedness.
The practical implication of the canada math scores decline at the individual level: the earlier a gap is identified and addressed, the cheaper it is to fix — in time, effort, and emotional cost to the student. A child who is behind in Grade 3 mathematics can be caught up in months. The same child, unaddressed until Grade 7, is typically years behind where they should be and requires significantly more intensive intervention.
For more on how the Ontario math curriculum builds across grades, see our Ontario math curriculum overview and our math curriculum in Canada guide.
What the Research Says Works — and How to Respond to the Canada Math Scores Decline
The research on effective mathematics instruction is substantially more consistent than public debate about curriculum reform suggests. The findings are not new — they have been replicated across countries and contexts for decades. The disagreement is political and pedagogical, not empirical.
Explicit instruction in foundational skills matters — and cannot be replaced by discovery alone
A large body of research supports explicit, systematic instruction in foundational arithmetic as the most effective approach for early mathematics — particularly for students who do not arrive at school with strong mathematical backgrounds from home. This does not mean drill without understanding — it means clear teaching of concepts and procedures, with understanding built alongside procedural fluency, not instead of it.
Spaced practice produces more durable learning than massed practice
Students who practise a skill repeatedly over spaced intervals (every few days, across weeks) retain it significantly better than students who practise intensively in a single session and then move on. The curriculum structure of covering a topic for two weeks and then moving on — common in Canadian schools — is not well-aligned with what research shows about long-term retention.
Our active recall guide covers how to apply spaced retrieval practice at home in a structured, low-overhead way.
Number sense is the foundation everything else builds on
Students who develop genuine number sense — flexible, intuitive understanding of how numbers work — in the early years of school outperform peers with weaker number sense on every subsequent measure of mathematical achievement. Number sense is not taught through any single method; it develops through a combination of explicit instruction, varied practice, and mathematical conversation. For more on what number sense is and how to build it, see our number sense parent guide.
Small-group and one-to-one instruction is more effective than whole-class instruction for addressing gaps
Every large-scale study of mathematics intervention finds that small-group targeted instruction — identifying specific gaps and addressing them directly, with feedback — produces larger gains than whole-class instruction alone. This is not a criticism of classroom teachers; it is a structural fact about what is possible in a class of 25 students vs a session with one or three. It is the central rationale for supplemental mathematics support outside the classroom.
What Parents Can Do About Canada’s Math Scores Decline
Understanding the national trend is useful context. Acting on it is what matters.
Find out where your child actually stands, not where their report card says they are
Report card marks are relative to the classroom and the teacher — they are not standardised across schools or provinces. A child with 75% in Grade 5 mathematics at one school may have stronger or weaker foundational skills than a child with 75% at another school. A diagnostic assessment that measures against a defined curriculum standard is more informative than a school mark for understanding whether a child’s mathematical foundations are solid.
Address gaps early, before they compound
If your child is in Grades 1 to 4 and showing any uncertainty with counting, place value, addition, or subtraction — address it now. The cost of addressing a gap in Grade 2 is a fraction of the cost of addressing it in Grade 6. The same principle applies at every transition: Grades 4 to 6, Grades 6 to 8, Grades 8 to 9. Each transition amplifies whatever gaps exist.
Build consistent mathematical habit outside school
The research on summer learning loss in mathematics is consistent: students lose roughly one to two months of mathematical progress over summer breaks without maintenance. Regular, brief mathematical practice across the school year and through summer — 15 to 20 minutes three to four times per week — prevents this erosion and compounds learning over time. For guidance on structuring this, see our study schedule guide.
Consider structured supplemental instruction
If your child has identified gaps, or if you want to ensure they are working above grade level rather than simply keeping pace with a declining average, structured supplemental instruction is the most evidence-based intervention available. Think Academy Canada works with students from Grade 1 through Grade 12 across Canada, online, with diagnostic-led placement and a defined curriculum built around the research on effective mathematics instruction.
How Think Academy Canada Responds to This
Think Academy Canada was built around the recognition that the school system alone is not always sufficient — and the canada math scores decline in international and provincial data reflects this at a systemic level. Supplemental structured instruction produces measurably better outcomes for most students.
Our approach reflects the research:
- Diagnostic-led placement — every student starts with an assessment that identifies their actual mathematical level, not their grade or their school mark
- Explicit instruction with understanding — we teach concepts clearly and directly, with understanding built alongside procedural fluency
- Spaced practice — our curriculum is designed around regular sessions with retrieval-based review, not massed practice followed by moving on
- Small groups and individual attention — our class sizes are designed so every student receives meaningful feedback in every session
- Competition mathematics for high performers — for students who are not just keeping pace but aiming well above it, our competition programmes (AMC, CEMC, Gauss, Euclid) build the mathematical reasoning that sets students apart at university level
The free diagnostic assessment is available for all students in Grades 1 to 12 across Canada. It takes 20 minutes and produces a written feedback report that tells you specifically where your child’s mathematical foundations sit — not relative to a declining average, but against a defined curriculum standard.
Frequently Asked Questions
Are Canadian math scores really declining? Yes. Canada’s math scores decline is well documented in PISA data: scores for Canadian 15-year-olds fell from 532 in 2003 to 497 in 2022 — a drop of 35 points over 20 years, taking Canada from well above the OECD average to slightly below it for the first time. Provincial assessment data in Ontario, Alberta, and BC shows similar downward trends over the same period.
Which province has the best math scores in Canada? Quebec consistently outperforms other provinces in both PISA mathematics and Canadian interprovincial comparisons. Its more coherent provincial curriculum and stronger secondary mathematics tradition are generally cited as contributing factors.
What caused Canada’s math scores to decline? A combination of factors: curriculum shifts that reduced explicit instruction in foundational arithmetic skills, fragmentation across 13 provincial and territorial curricula, gaps in teacher content knowledge for elementary mathematics, and — most recently — COVID-19 learning disruption. Researchers differ on the relative weight of each factor.
What should I do if I’m worried about my child’s math skills? Start with a diagnostic assessment that gives a clear, specific picture of where your child’s current skills sit relative to grade-level expectations. This is more actionable than a school mark alone. Then address any identified gaps early — the earlier, the easier.
Does the decline in national math scores affect my child directly? Not necessarily — national averages conceal enormous variability across schools, classrooms, and students. A child who receives strong foundational instruction in mathematics and has gaps addressed early can perform at well above the national average regardless of the trend. The national data is useful context, not a prediction about any individual student.
Is after-school math tutoring evidence-based? Small-group and individual targeted instruction in mathematics is among the most rigorously supported interventions in the educational research literature. The Education Endowment Foundation’s Teaching and Learning Toolkit rates small-group tuition as having high evidence strength for improving mathematics outcomes. The quality and approach of the specific programme matters — diagnostic-led, structured programmes with qualified instructors outperform generic homework help or worksheet-based sessions.
See our related guides: Ontario math curriculum overview · math curriculum in Canada guide · number sense parent guide · EQAO Grade 6 complete guide · EQAO Grade 9 complete guide · math enrichment guide · online math tutor Canada guide · active recall guide · study schedule guide · year-round schooling guide
Canada’s math scores are declining. Your child’s don’t have to.
