Can I take two IB Sciences at SL?

Yes, you can take two IB Sciences at SL, and many students do when they want breadth without the full HL load. The IB does not require your Group 4 subject to be HL, only that you take at least one Group 4 subject overall. The more important question is why you want two sciences, because two SL sciences still create double lab expectations and double revision cycles. If your reason is “I might want science later,” it can be worth it, but only if it does not weaken your HL choices elsewhere. Use your school’s guidance and then plan your revision schedule early so both subjects stay warm all year. RevisionDojo helps here because you can keep SL science steady with Flashcards and quick Questionbank sets while your HL subjects take the heavier lift.

Is it smart to take one HL science and one SL science for exams?

Often, yes, because it is one of the most balanced ways to keep options open while staying realistic about time. A single HL science gives you depth, stronger university signaling, and the experience of longer, tougher exam questions. The SL science gives you flexibility, and it can protect your week when IA and core deadlines cluster. The mistake is treating the SL science as “easy” and then trying to relearn it in the final month. Instead, run short weekly sessions, then ramp up with mixed-topic practice as exams approach. This is where RevisionDojo’s Study Notes and Questionbank work well together: read, test, review, repeat.

Does ESS count as Group 4 if I want a science-light diploma?

ESS can count as Group 4, but the key detail is that schools may register it as either Group 3 or Group 4. You need to confirm with your IB coordinator how your school treats it, because that affects whether you still need another Group 4 science. ESS is also only available at SL, so it cannot be your HL science even if you love the subject. For students who want scientific literacy without the intensity of Chemistry HL or Physics HL, ESS is a practical option. It is also a strong choice if you enjoy evaluation, case studies, and systems thinking more than abstract calculations. If you go this route, commit to consistent practice so your ESS knowledge stays usable in exam conditions.

Can I take 4 HL subjects if two of them are IB Sciences?

It is allowed, but it is rarely comfortable. Two HL IB Sciences usually means two demanding syllabi plus two science-style exam prep cycles, often alongside at least one demanding math or writing HL. The workload is not only the content; it is also the cumulative pressure of deadlines, labs, and extended revision sessions. Some students thrive with 4 HLs, but most do it for the wrong reason: fear of closing doors. A better approach is to choose 3 HLs that genuinely match your university direction and protect your consistency across all subjects. If you still want to try 4 HLs, build a plan with weekly checkpoints, and use RevisionDojo’s Grading tools and Mock Exams to catch problems early rather than late.