The O-Levels span several months, from Mother Tongue papers in June to the main written papers in October and November. 

Because different components fall at different times, studying for the O-Levels calls for a more deliberate approach than simply pushing hard in the second half of the year.

O-Level exam schedule overview

For exact dates and subject-specific details, students should refer to the Singapore Examinations and Assessments Board (SEAB) website.

As a general guide for the O-Levels in 2026, the first written papers, typically for Mother Tongue languages, begin in June. These subjects are scheduled earlier in the year because students may have a second sitting later on. Listening comprehension and oral exams are mostly held in July and August, while some practical exams start in September. The main written paper period runs through October and November.

The SEAB website also provides important exam-related information, including approved calculators and dictionaries, as well as guidance on what students should do if there is a train disruption on an exam day.

Because the O-Levels are spread out over several months, students should not think of revision as one long push towards the end of the year. Different subjects need attention at different points in the exam season, and some components, such as oral exams and practicals, take place much earlier than the final written papers. This makes it important to plan revision around the actual exam timetable, rather than studying every subject in the same way or at the same pace.

For parents, supporting a teen through the O-Levels is usually very different from supporting a child in primary school. At this stage, most teenagers need less hands-on supervision and more steady support. This may mean helping them maintain healthy routines, keeping stress levels in check, and stepping in when they need help thinking through how to revise or adjust their study plan.

Starting with a topic audit

Here's a recommended approach: don't start with a blank weekly grid. Instead, your teen should begin with a clear picture of what needs work.

In his book Outsmart Your Studies, William Wadsworth (a Cambridge University-educated psychologist) recommends listing topics and subtopics, then using a simple tracking system to identify which ones are weakest.

Teens can use a "traffic light" system, where red is for topics that need work, amber for topics that are getting there, and green for topics that feel secure. Wadsworth also suggests starting with the red topics first.

Matching workload to available time

The next step is to assess one's available time. 

This requires your teen to do a time budget (view an example), to see how much time they can spend on revision, and what can be accomplished. The goal is not to produce a minute-by-minute detailed timetable, but to have a bird's-eye view of the road ahead.

For O-Level students, they can work backwards from the exam schedule, giving earlier attention to components that come sooner, such as Mother Tongue papers, and being honest about how much can realistically be done in a normal school week.

Planning by task, not subject

To make a timetable instantly stronger, allocate time to a specific task within a subject. For instance, "Biology, 1 hour" is vague. "Recall the steps of respiration from memory, then do five structured questions" is much better. "E Maths, 45 minutes" is also vague. "Do 15 algebra questions and mark corrections" is clearer.

The role of retrieval practice

For the most effective revision, focus on retrieval practice. This means trying to recall information from memory, instead of simply rereading it.

Examples of retrieval practice include self-testing using flashcards, working on practice questions, and writing out everything one can remember on a blank sheet of paper before checking the answer. Research has shown that study techniques that don't involve information retrieval, such as rereading or making notes, are less effective in supporting eventual recall. These less useful methods should play a much smaller role in your teen's revision efforts.

To provide a stronger sense of purpose, revision must also include some form of progress checking. This could be a set of worked questions with sample answers, a page of recalled facts, or a list of corrected mistakes. A study session shouldn't end with "I looked at my notes for an hour." Your teen should be able to name an accomplishment, such as "I answered these questions, and now I know where I went wrong."

Revisiting topics and spaced repetition

Revision is not a "one and done" process. According to research, students remember more when they return to a topic on different days, instead of trying to finish everything in one sitting.

Time allocated to revisiting topics is where many study timetables fall short. Typically, teens approach studying like a checklist: Monday is acids and bases, Tuesday is chemical bonding, Wednesday is electricity, and then the student moves on.

A better approach is to incorporate a topic over several days. If acids and bases were studied on Monday, there should be a short recall slot on Tuesday or Wednesday. Or, if your teen gets several Additional Maths questions wrong on Thursday from the same topic, that weak spot should be worked on again the following week.

Timing your study sessions

Finally, there is the consideration of optimal timing, covered in books like Michael Breus's The Power of When. The premise is that people do not perform equally well at every hour of the day, which is why even small changes to timing can improve productivity. Because people differ in their chronotypes, or natural timing preferences, analytical tasks are best done during a person's most alert hours.

This has an obvious application for O-Level revision: students should ideally put their hardest work into the part of the day when they are most alert. If a teen comes home wiped out at 4pm, this may not be the best time for Additional Maths or essay planning. This slot may be better used for a snack, a shower, or lighter work. The heavier work can come later, when the brain is switched on, or very early in the morning on weekends, if that is your teen's preferred timing.

Example weekday and weekend timetables

Below is an example weekday timetable, which your teen can adapt for their needs.

This timetable works because each block of time has a clear purpose. It also focuses on the three task types that students often leave out:

• Information retrieval

• Checking

• Retesting and revisiting topics

A weekend timetable can be longer, but the same logic still applies.

A final tip: students often finish practice questions, mark them, and move on. A better habit is to use mistakes to shape the next week's study plan. If the same errors keep showing up, these are the topics that should get attention in the following week, with teachers or tutors consulted if necessary.

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