Leo Institute of Dueling

Leo buliding




Reo Dyueru Sukūru

Japanese translated

Leo Duel School


Leo Institute of Dueling

Appears in (anime)

Yu-Gi-Oh! ARC-V


Leo Corporation

The Leo Institute of Dueling (often abbreviated as the Leo Institute or as LID), known as Leo Duel School (レオ・デュエル・スクール Reo Dyueru Sukūru, often abbreviated as LDS Erudīesu) in the Japanese version, is a preparatory Duel school located in Paradise City. It is the most prestigious of the Duel schools and is owned by the Leo Corporation.[2] The school offers courses for Fusion Summon, Synchro Summon and Xyz Summon.[3] Declan Akaba also wants to include Pendulum Summon in the curriculum. The school is currently headed by Henrietta Akaba.


LDS Curriculum

1st Tier

  • Duel Monsters Overall Studies
  • Staple Cards Studies
  • Integration Course
  • Basics of Duel Tactics
  • Construction of Main Deck
  • Basic Subjects

Synchro Course

2nd Tier

  • Synchro Summons I
  • Tuner Studies
  • Practical Battle I

3rd Tier

  • Synchro Summons II
  • Studies of Suitable Number of Tuner Cards
  • Continuous Draw Practical Studies
  • Side Deck Studies I
  • Practical Battle II

4th Tier

  • Side Deck Studies II
  • Extra Deck Studies
  • Fudo-Style Solitaire Theory

Xyz Course

2nd Tier

  • Xyz Summons I
  • Rank Basic Studies
  • Practical Battle I

3rd Tier

  • Xyz Summons II
  • Practical Rank Studies
  • Monster Effect Negation Studies
  • Side Deck Studies I
  • Practical Battle II

4th Tier

  • Side Deck Studies II
  • Extra Deck Studies
  • Special Card Changing Theory

Fusion Course

2nd Tier

  • Advantage Studies
  • Fusion Summons I
  • Extra Deck Basic Studies

3rd Tier

  • Disadvantage Studies
  • Deck Compression Studies
  • Fusion Summons II
  • Side Deck Studies I
  • Attribute-Based Fusions Practical Battle

4th Tier

  • Side Deck Studies II
  • Extra Deck Studies
  • Super Fusion Theory

Integrated Course

2nd Tier

  • Chain Block Studies
  • Advance Summons I
  • Damage Calculation Studies

3rd Tier

  • Old Rituals Studies
  • Contemporary Rituals Studies
  • Advance Summons II
  • Draw Experiment
  • Probability of Hand Destruction

4th Tier

  • D-Draw Probability Theory
  • Surrender Theory
  • Common Dueling Theory


List of students

List of exchange students



  1. "[Arc-V Declan’s Mother’s Dub Name"]. YGOrganization. Retrieved March 14, 2015.
  2. "OCG V-Jump Time". YGOrganization. February 17, 2014.
  3. 3.0 3.1 3.2 3.3 3.4 Yu-Gi-Oh! ARC-V episode 3: "Trade Bait: Part 1"
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Yu-Gi-Oh! ARC-V episode 8: "Bad Business"
  5. Yu-Gi-Oh! ARC-V episode 99: "A Vicious Cycle"
  6. Yu-Gi-Oh! ARC-V episode 40: "Stealth Warriors"
  7. 7.0 7.1 Yu-Gi-Oh! ARC-V episode 27: "Challengers Assemble"
  8. Yu-Gi-Oh! ARC-V episode 43: "Fire And Ice"
  9. 9.0 9.1 Yu-Gi-Oh! ARC-V episode 42: "Battle Fields"
  10. Yu-Gi-Oh! ARC-V episode 52: "Parental Guidance: Part 1"
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