Prep Den is a study platform built for AP® and IB® students: guides that follow your syllabus, flashcards, quizzes, and learning games in the Study Arcade. Every guide includes 12 months of access, so one purchase covers the whole school year, from the first unit to exam day.
21 AP®
Subjects
11 IB®
Subjects
1,000+
Practice Qs
No more passive re-reading. Prep Den makes you actively recall, practice, and apply every concept.
Topic-by-topic flashcards. Track what you know and focus on what you need to review.
Multiple-choice quizzes with instant feedback and detailed explanations for every answer.
Every topic and subtopic in the curriculum, organized so you always know where you are.
Targeted advice on command terms, essay structure, and mark-scheme thinking that examiners look for.
Master all 8 units with original explanations, flashcards, and FRQ-style practice.
All 5 units plus personal finance, the Business Canvas project, and the four skill categories: built for the 60 MC and 4 free-response questions.
Limits to series: every AB and BC topic with worked patterns and FRQ-style drills.
All 9 units, the six science practices, and the equation sheet: built for the MC and the 7 FRQs.
All 4 units, the five computational thinking practices, and the Java Quick Reference: built for the 42 MC and the 4 FRQs.
All 5 big ideas, the six computational thinking practices, and the Exam Reference Sheet: built for the 70 MC and the Create Performance Task.
All 5 units and the four cybersecurity skills (analyze risk, mitigate risk, detect attacks, collaborate): built for the 60 MC and the free-response question.
Rhetorical analysis, argument, and synthesis essays: the moves that earn the 5.
Poetry, prose, and literary argument: frameworks that earn the 5.
All 9 units, the four science practices, and the four big ideas: built for the 80 MC and the 3 FRQs.
All 9 units from the Renaissance to today, the seven themes, and the historical thinking skills: built for the MC, SAQ, DBQ, and LEQ.
All 7 units: population, culture, politics, agriculture, cities, and economic development.
All 6 units, the four skill categories, and the graphs: built for the 60 MC and the 3 FRQs.
All 6 units, the four skill categories, and the graphs: built for the 60 MC and the 3 FRQs.
All 8 units, the three science practices, and the equation sheet: built for the 40 MC and the 4 FRQs.
All 7 units, the three science practices, and the equation sheet: built for the 40 MC and the 4 FRQs.
All 5 units of the redesigned AP® Psychology: biological bases, cognition, development, social, and mental health.
All 5 units of the Fall 2026 course: exploring and collecting data, probability and distributions, and inference for proportions, means, and regression.
Foundations, branches, civil rights, and ideologies: built for FRQ and MC.
1491 to present: every period with original analysis and DBQ/LEQ strategy.
c. 1200 to present: every unit, the six themes, and comparative reasoning.
Master all four IB® Biology themes: first assessment 2025: with interactive flashcards, quizzes, and HL extensions.
Master IB® Business Management (first assessment 2024): five units plus the Toolkit, exams, and IA: with frameworks, case study practice, and the four key concepts.
From atomic theory to organic chemistry: master every IB® Chemistry concept with interactive tools.
From supply & demand to macroeconomics: master IB® Economics concepts and exam technique.
Master ecosystems, sustainability, and environmental value systems for IB® ESS: HL lenses included.
Ace IB® Film with guided analysis of cinematic techniques, film movements, and textual analysis skills.
Navigate power, sovereignty, and global issues with deep-dive guides and engagement activity support.
Master IB® History source analysis, essay writing, and key events across all major topics.
Master IB® Math AA with step-by-step topic guides, formula practice, and HL extensions including complex numbers and proof.
Master real-world math modeling, statistics, and technology use for IB® Math AI.
Master research methods, core approaches, and options for top marks in IB® Psychology.
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Pay once and get 12 months of full access to your guide.
Work through flashcards, quizzes, and interactive tools at your own pace.
One price, 12 months of access, everything you need.