Last Updated: August 6, 2026
The OSSLT Explained: Ontario’s Literacy Test and What Happens If Your Child Fails
TL;DR
- The OSSLT is Ontario’s literacy test. Most students write it in Grade 10, online, in two sessions totalling 37 questions.
- It is scored on a scale from 200 to 400, and 300 is the pass mark. Passing it is one of the requirements for the Ontario Secondary School Diploma.
- If your child does not pass, they can write it again. After two opportunities, if they have been unsuccessful at least once, they become eligible for a credit course that meets the requirement instead.
- Almost nobody fails to graduate because of this test alone.
What the OSSLT actually is
The Ontario Secondary School Literacy Test measures whether a student has the reading and writing skills expected across all subjects by the end of Grade 9. The Education Quality and Accountability Office (EQAO), the provincial assessment agency, sets and marks it. Your child’s school does not.
It is not a course. It carries no credit and no grade that appears on a transcript. It is a single requirement with a pass or a not-yet.
That last point matters more than parents expect, because the test has a reputation that does not match how it works.
Who writes it, and when
The EQAO’s position is that students working toward an Ontario Secondary School Diploma “are expected to write the OSSLT for the first time in their second year of secondary school.” In practice that means Grade 10 for most students.
A principal can grant a deferral, which moves the test to a later year. Deferrals exist for students who are not yet ready to attempt it, including some students who are still building English language skills.
For the coming school year, the EQAO has set two administration windows:
| Window | Dates |
|---|---|
| Fall 2026 | November 3 to 30, 2026 |
| Spring 2027 | March 30 to April 19, 2027 |
Your child’s school chooses its own dates inside those windows, so ask the school rather than assuming.
What is on the test
The OSSLT is written online. It has two sessions and 37 questions in total: 35 selected-response questions and two written open-response questions.
| Session | Approximate length |
|---|---|
| Session A | 65 minutes |
| Session B | 75 minutes |
The selected-response questions are not all simple multiple choice. The EQAO lists “single-selection, multiple-selection, drag and drop, drop-down menu and checklist questions.” Students who have only practised standard multiple choice sometimes lose time working out the mechanics of a question format they have not seen.
The two open-response questions are the writing component. This is where students who read well but organise their writing poorly tend to lose marks.
How it is scored, and what 300 means
The EQAO scores the OSSLT using Item Response Theory. Rather than a raw percentage, each student’s result is placed on a scale. In EQAO’s words, “the placement along the continuum is represented by a scale score between 200 and 400, with a minimum of 300 required for a successful outcome.”
So:
- 300 or above is a successful outcome.
- Below 300 is not yet successful.
- A score like 350 sits comfortably above the pass mark. Parents often ask about this specific number because it appears in search results. There is no honours tier and no advantage to a higher number. The result is used as a requirement check, not a ranking.
Because scores are scaled rather than raw, you cannot work out a pass from a count of correct answers, and neither can your child.
What happens if your child does not pass
This is the question most parents are actually asking, and it has a calmer answer than the internet suggests.
First, they can write it again. Not passing on the first attempt does not remove the diploma pathway. The test runs twice a year.
Second, there is a course that meets the requirement instead. It is called the Ontario Secondary School Literacy Course. The EQAO sets the eligibility rule plainly: “If a student has had two opportunities to take the OSSLT and has been unsuccessful at least once, the student is eligible to enrol in the OSSLC.”
Read that carefully, because the wording is precise and often misquoted. The trigger is two opportunities and at least one unsuccessful result. It is not two failures.
Third, a principal has discretion to move faster. The EQAO notes that principals may allow a student to enrol in the course earlier where it is judged to be in that student’s best interest. Mature students may enrol directly.
Completing that course satisfies the literacy requirement for the diploma. A student who takes this route graduates with the same Ontario Secondary School Diploma as everyone else.
So the honest summary: not passing in Grade 10 changes the route, not the destination.
What is worth doing before the test
The OSSLT tests skills built over years, so there is no useful cram. There are still three things that reliably help.
Sit a practice test in the real format. The EQAO publishes sample materials, and school boards run preparation sessions. The value is not the content. It is removing the surprise of drag-and-drop and multiple-selection questions under time pressure.
Work out which half is the weak half. Reading comprehension and written organisation fail for different reasons and need different practice. A student who understands a text but cannot structure a response does not need more reading. Guessing wrong here wastes the months before the test.
Check whether accommodations are already in place. A student with an Individual Education Plan may be entitled to the accommodations they normally receive. Ask the school what is documented, well before the administration window opens.
Where a certified teacher fits
Two jobs sit inside literacy support, and they are easy to confuse.
The first is diagnosis and planning. A teacher who has taught and marked to the Ontario curriculum can look at a student’s writing and say which specific skill is missing, then map what to work on and in what order. That is a different task from general reading practice, and it is where most of the value sits before a test like this.
The second is the teaching itself, aimed at the skill the plan identified.
Genie works only with Canadian Certified Teachers, licensed by a provincial governing body such as the Ontario College of Teachers. Certification is verified before a teacher ever sees a student profile: the certificate number and issuing body are checked against the provincial registry, with a live government ID match. Genie calls this the Trust Engine.
Matching is by course, pace and personality, and parents get a record after each lesson of what was covered and what their child understood. For a requirement like the OSSLT, that record is the part that tells you whether the plan is working while there is still time to change it.
The literacy test measures reading comprehension built over ten years of school. To see what that should look like at your own stage, and how to tell a word-reading difficulty from a comprehension one, read reading comprehension grade by grade.
Related reading: EQAO results explained: what the four levels mean for your child →
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FAQ
What is the passing score for the OSSLT?
What is the passing score for the OSSLT?
A scale score of 300. Results are reported on a scale from 200 to 400, and the EQAO requires a minimum of 300 for a successful outcome.
Is the OSSLT hard to pass?
Is the OSSLT hard to pass?
It is designed around the reading and writing skills expected by the end of Grade 9. It does not test advanced English. Most students pass. The students who struggle are usually those with an existing gap in reading comprehension or written organisation, which is why identifying which of the two is the issue matters more than general practice.
Is 350 a good OSSLT score?
Is 350 a good OSSLT score?
It is above the 300 pass mark. There is no benefit beyond passing. The result functions as a diploma requirement check, and no university or college treats a higher OSSLT score as an advantage.
What happens if my child fails the OSSLT?
What happens if my child fails the OSSLT?
They can write it again at the next administration. After two opportunities, if they have been unsuccessful at least once, they become eligible for the Ontario Secondary School Literacy Course, which satisfies the same diploma requirement.
Can my child skip the OSSLT?
Can my child skip the OSSLT?
Not by choice. A principal may grant a deferral to a later year, and the literacy course route exists for students who have met the eligibility rule. Both are decisions made with the school.
When is the OSSLT written?
When is the OSSLT written?
Usually in the second year of secondary school. The EQAO has set administration windows of November 3 to 30, 2026 and March 30 to April 19, 2027. Individual schools pick their dates inside those windows.
Does the OSSLT affect my child’s grades or university applications?
Does the OSSLT affect my child’s grades or university applications?
No. It carries no credit and no course grade. It is a graduation requirement, recorded as met or not yet met.