PK Academy

PK Academy is a private high school where the main protagonist, Saiki Kusuo and his circle of friends attends. In total, it has 542 students of which only two students know that Kusuo has Psi powers.

Classroom
The school classrooms are labeled according to Psychic Zener Card symbols [🌕➕∭⬜✰]. The first number represents the year they're in and the second symbol is a Psychic Zener Card symbol, each one is used in place of a number. So Toritsuka's class is 2 - ➕, where the ➕ stands for 2 so he's in 2nd Year - Class 2 and the ∭ looking symbol for Saiki's classroom number stands for 3, so he's in 2nd year - Class 3.

Club

 * Baseball Club
 * Kokominzu
 * Newspaper Club
 * Occult Club
 * Tennis Club

Sports festival

 * A school event that is usually held every year in the fall. Each class collaborates together as a group and competes against the other classes, fighting for victory.

School excursion

 * PK events that were done during the 2nd year of the students. Every year in the middle of the summer, their destination is Okinawa.

PK Festival

 * School event that is usually held every year in the fall.

Marathon

 * School event that is usually held every year in the winter.

Principal

 * Kanda Shinasuke

Teachers

 * Matsuzaki
 * Hatakeyama
 * Igarashi
 * Shima Kyouka
 * Niwayama Kyuuji

1st Year

 * Makino Arisu
 * Rifuta Imu
 * Maki Shiiko

2-🌕
Class 1 was described as the clever class because many were the top ranking students in grade tests. They're not particularly athletic.
 * Tanaka Ichirou
 * Sugiyama Haruo
 * Kihachi Bunta
 * Nishi Soujirou

2-➕
Class 2 has the highest proportion of muscular students who are also affiliated with sports clubs. It is said that their physical strengths are at Nendou-level.
 * Toritsuka Reita
 * Shinoda Takeru
 * Takayuki Maeda
 * Shinya Nakanishi
 * Satou Hiroshi
 * Ooshima Yuuji
 * Oohori Kouichi
 * Itano Yoriko

2-∭
Class 3 is mostly composed of main characters.
 * Saiki Kusuo
 * Nendou Riki
 * Kaidou Shun
 * Aiura Mikoto
 * Hairo Kineshi
 * Kuboyasu Aren
 * Mera Chisato
 * Saiko Metori
 * Teruhashi Kokomi
 * Takahashi
 * Yumehara Chiyo
 * Zolbe
 * Sawakita
 * Murata Shuuji
 * Yokota Jaga

2-⬜
Class 4 has a resourceful leader and is the second clever class.
 * Tanihara Kenji
 * Hotei Tomotaka
 * Haruno Yasuo

2-✰
Most of these students wear glasses.
 * Matsuda Ippei
 * Mishima Nobuaki
 * Mikami Aiko
 * Kumi Kouji

3rd Year

 * Kongou Tsuyoshi
 * Morikawa Minoru
 * Ninomiya Kaneko
 * Makishima Seiya
 * Takizawa Kazushi
 * Akanishi Shinichi
 * Mineo Nobuaki
 * Kuramoki Shinsuke

Other Students

 * Gyuu Hikari - Ghost Girl
 * Jouten Manako - Newspaper Club Manager. She appeared in Chapter 156.
 * Yumi - A girl that had no choice but to asked Riki out after she lost a bet. She appears in Chapter 04.
 * Higashino Bungo - Enrolled at 20 years ago who hits off another girl named Murakami Akiko. He appeared in Chapter 170.
 * Ueda - 1992 Alumni. He is currently a popular comedian and appeared in Chapter 176.