Leo Institute of Dueling

The Leo Duel School (レオ・デュエル・スクール Reo Deyueru Sukūru, often abbreviated as LDS Erudīesu) is a preparatory Duel school located in Maiami City. It is the most prestigious of the Duel schools and is owned by the Leo Corporation. The school offers courses for Fusion Summon, Synchro Summon and Xyz Summon. Declan also wants to include Pendulum Summon in the curriculum. The school is currently headed by Himika Akaba.

1st Tier

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

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
 * Inanimate Solitaire Theory

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

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

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

Staff

 * Henrietta - Chairwoman
 * Marco - Leo Duel School Fusion Course

List of students

 * Akira Samejima
 * Dipper
 * Kakimoto
 * Masashi Kitaura
 * Masumi Kotsu
 * Mio Tojyo
 * Ootomo
 * Reira
 * Shingo Sawatari
 * Shun Kurosaki
 * Tetsuro Yamaguchi
 * Yaiba Todo
 * Yamabe
 * Yuu Sakuragi

List of exchange students

 * Dennis Macfield - Broadway branch
 * Halil - Anatolia branch
 * Olga - Nordic branch

Trivia

 * The students chosen by Henrietta to duel the You Show Duel School all use Duel Terminal/Hidden Arsenal Decks.