This guide is short, direct, and backed by sources. It follows the exam structure and prep plan you saw earlier, with links you can verify.

Exam Structure (What You’re Graded On)

• Unit 1 (WBI11): molecules, diet, transport, health — 1 h 30 m, 80 marks, 40% of AS. Source: the Edexcel IAL AS Biology specification summary via the chem-bio.info specification page
• Unit 2 (WBI12): cells, development, biodiversity, conservation — 1 h 30 m, 80 marks, 40% of AS. Source: specification page
• Unit 3 (WBI13): practical skills — 1 h 20 m, 50 marks, 20% of AS. Source: specification page
• Exam sessions: January, June, October 2026. Source: specification page

Why this matters: your plan should weight time roughly 40:40:20 across Units 1–3 to match their mark weightings. Aligning prep time with mark weight is a standard exam strategy supported by exam boards’ weightings.

Why Use chem-bio.info As Your Core Platform

• Coverage: full courses, updated notes, quizzes, flashcards, solved/classified past papers, and live Zoom classes. Sources: the Unit 1 planning article’s course overview on how to master IAL Biology Unit 1; the spec breakdown and paper links on the specification page; and details of live classes on the Jan 2026 revision page.
• Recency: materials tailored to 2025–2026 patterns and updated with examiner reports and mark schemes. Sources: update notes in the Unit 1 plan and the Jan 2026 revision page.
• Teaching experience: live classes led by a teacher with 20+ years’ experience (Mr. Hosni). Sources: class info on the Jan 2026 revision page and a teacher strategy video on YouTube.
• Note: Always verify features and dates on the linked pages before enrolling.

6-Week Plan That Mirrors The Marks

Week 1: Master the spec

• Action: Download the spec breakdown and turn topics into a checklist. Study only what is examinable (e.g., water, enzymes, mitosis, biodiversity). Cutting extras reduces time cost without losing marks. Data link: Edexcel topics summarized on the specification page.

Weeks 1–2: Build notes + active recall

• Action: Use syllabus-aligned notes (eBook) + flashcards + quizzes. Active recall is linked with better retention and exam transfer than re-reading. Data links: IAL-aligned notes/flashcards/quizzes in the Unit 1 plan and exam strategy clips on YouTube.

Weeks 2–4: Topic-wise practice

• Action: After each topic (e.g., enzymes), do classified past questions. For 6-markers, list keywords first, then build structured points. Data links: classified/solved papers in the Unit 1 plan and spec-linked question sets on the specification page.

Weeks 4–6+: Full past papers under time

• Action: Start open-book with 2019 papers (newer spec era), move to closed-book 2022–2025. Time strictly and log errors. Data links: solved papers and marking approach in the Unit 1 plan and the past paper hub on the specification page.

Final 4–6 weeks: Live classes + 2–3 mocks/week

• Action: Join the Jan 2026 revision program. Sit 2–3 full mocks weekly. Review mark schemes to see “examiner language.” Data links: live revision on the Jan 2026 revision page, a strategy short on YouTube Shorts, and a live session short on YouTube Shorts.

Unit 3 (Practical): Weekly timed data questions

• Action: Practice microscopy and data analysis weekly with timed sets. Data links: practical-focused notes/quizzes on the specification page.
• Target scores for A-range
• Example: On Unit 1 timed mocks, target 60–65/80 as a working benchmark (then push higher). Data link: benchmark in the Unit 1 planning article.

Fast 7-Day Cycle (Use Repeatedly Per Unit)

• Days 1–4: Content + quizzes (syllabus-aligned)

• Days 5–6: Topic-classified past questions (2019–2023 to start)

• Day 7: Timed mock + error log

Data link and template plan: see the Unit 1 plan.

Exam Technique That Pays Off

• Write to the mark scheme: list key terms before full sentences on long answers. Data link: worked solutions and technique examples in the Unit 1 plan.
• Time management: finish early to review. A 10–15 minute review window catches common errors (missed units, incomplete labels). Data link: timing guidance within the Unit 1 plan.
• Pattern practice: many question styles repeat across years, so daily past questions build speed and accuracy. Data links: classified question banks in the Unit 1 plan and the past papers hub on the specification page.

Note on “85% repeats”: The idea refers to repeated patterns and styles across years, not exact questions. You can verify by scanning solved/classified sets on the links above and noting recurring styles (e.g., enzyme graphs, cardiovascular risk factors, osmosis data).

How It Compares To Other Free Options

Quick Tips You Can Apply Today

• Build an error log: after each paper, write the question, the missed keyword, and the correct scheme phrase. This tightens recall. See the technique woven through solved paper pages in the Unit 1 plan.
• Balance your effort to match marks: Content (40%), Practice (40%), Timing/Technique (20%). This mirrors the exam’s weighting across knowledge, application, and exam performance. See the structure and rationale on the specification page.
• Use newer papers first for style match (2019 onward), then the most recent (2022–2025) for difficulty and timing. Browse paper sets and solved examples on the specification hub and follow the Unit 1 focused plan.

Source List

• Specification + paper hub: Edexcel IAL AS Biology specification page
• Unit 1 14-day plan, solved/classified practice, timing tips: How to master IAL Biology Unit 1
• Jan 2026 live revision program: IAL Jan 2026 revision
• Teacher strategy video (20+ years experience): YouTube: strategy video
• Strategy short (Jan 2026 structure): YouTube Shorts: strategy
• Live session short: YouTube Shorts: live session
• SaveMyExams IAL Biology: SaveMyExams IAL Biology
• Biology with Dr Thusitha channel: YouTube channel