Bad Teacher’s Equation (Series)

腐った教師の方程式 Vol. 1
Original Biblos Publication

腐った教師の方程式 (Series)
Kazuma KODAKA

Romanized Title:

Kusatta Kyoushi no Houteishiki

English Title:

Bad Teacher’s Equation
(Digital Manga Publishing)

Original Serialization

First Chapter:

Vol. 1: “Atsushi’s Ordeal”
Magazine BE×BOY No. 1 (Apr. 1993)

Last Chapter:

Vol. 48: “I Like You”
Magazine BE×BOY (May 2002)

Current Status

Japan:

Digital-only (Compass)

North America:

Out-of-Print

Japanese Publisher Information
  • Originally published by Seiji Biblos (Biblos) from 1993-2002. Edition out-of-print.
  • Republished as omnibus editions by Mediation in late-2006. Edition out-of-print.
  • Republished digitally by Compass in Dec. 2019.
English Publisher Information
  • Digital Manga Publishing published the Mediation edition of Bad Teacher’s Equation in English from May 2011-Sept. 2012. This license is expired and the series is out-of-print.
Original Publication Release Dates
(Seiji Biblos | Biblos)

Volume 1
Dec. 10, 1993

Volume 2
Feb. 10, 1995

Volume 3
Nov. 10, 1995

Volume 4
Oct. 10, 1996

Volume 5
Jul. 10, 1998

Volume 6
Apr. 10, 1999

Volume 7
Oct. 10, 1999

Volume 8
Jun. 10, 2001

Volume 9
Nov. 10, 2001

Volume 10
Jun. 10, 2002

Republication Release Dates
(Mediation)

Volume 1
Sept. 10, 2006

Volume 2
Sept. 10, 2006

Volume 3
Oct. 10, 2006

Volume 4
Nov. 10, 2006

Volume 5
Dec. 10, 2006

Republication Release Dates
(Compass)

Volumes 1-10
Dec. 27, 2019

Encore (Side Story)
Jan. 30, 2020

English License Release Dates
(Digital Manga Publishing)

Volume 1
May 15, 2011

Volume 2
Sept. 19, 2011

Volume 3
Jan. 17, 2012

Volume 4
May 30, 2012

Volume 5
Sept. 26, 2012

Archival Status
  • Seiji Biblos (Biblos) Original Publication:
    • Volume 1 – Archived 09.27.2024
    • Volume 2 – Archived 11.22.2024
    • Volume 3 – In-Progress
    • Volume 4 – In-Progress
    • Volume 5 – In Progress
    • Volume 6 – In-Progress
    • Volume 7 – In Progress
    • Volume 8 – In-Progress
    • Volume 9 – In-Progress
    • Volume 10 – In-Progress
  • Compass Republication – N/A
  • Mediation Republication:
    • Volume 1 – In-Progress
    • Volume 2 – TBD
    • Volume 3 – TBD
    • Volume 4 – TBD
    • Volume 5 – TBD
  • Digital Manga Publishing License:
    • Volume 1 – Archived 01.18.2025
    • Volume 2 – Archived 12.17.2024
    • Volume 3 – Archived 04.02.2025
    • Volume 4 – Archived 10.07.2025
    • Volume 5 – Archived 10.16.2025
Additional Notes and Trivia
  • A spin-off, titled Love Equation, began publication in 2005.
Further Reading