Changing Majors

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전과자

RRJeongwaja

MRChŏnkwaja

Changing Majors

Hangul	전과자
RR	Jeongwaja
MR	Chŏnkwaja

Genre	Variety show
Starring	Lee Chang-sub Kai
Country of origin	South Korea
Original language	Korean
No. of seasons	8
No. of episodes	120
Production
Camera setup	Multi-camera
Running time	30 minutes
Production company	Ootb Studio
Original release
Network	YouTube
Release	November 11, 2022 (2022-11-11) – present

Changing Majors (Korean: 전과자) is a South Korean variety web series featuring various universities, colleges and schools, and the courses offered inside.^[1] Each episode of the series would be released at 18:00 (KST) on Thursdays through ootb Studio's YouTube channel.^[2]

ENA aired past episodes of the series that were re-processed for television, every Friday beginning May 23, 2025, for 10 weeks.^[3]

The series starred Lee Chang-sub of BtoB for the first five seasons, and Kai of Exo beginning season 6.^[4]

Lee Chang-sub (BtoB) (Seasons 1–5)
Kai (Exo) (Season 6–present)

Episodes

Season 1

List of episodes in Season 1

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
0	November 9, 2022	N/a		Behind of Episode 1
1	November 11, 2022	Dongguk University	Police Administration
2	November 18, 2022	Hankuk University of Foreign Studies	Thai Language
3	November 25, 2022	Induk University	Broadcast & Entertainment	Appearance by Shin Hyun-joon, who is a teaching professor in the university
4	December 1, 2022	Konkuk University	Veterinary Medicine
5	December 8, 2022	Catholic University of Korea	Psychology
6	December 15, 2022	Sahmyook University	Physical Therapy
7	December 22, 2022	Bucheon University	Airline Services
8	January 5, 2023	Osan University	e-Sports	Appearance by Byeon Sung-chul, who is a teaching professor in the university
9	January 12, 2023	Yong In University	Physical Education	Appearance by Jang Mi-ran, who is a teaching professor in the university
10	January 19, 2023	Howon University	N/a	Practical Music MT
11	January 26, 2023	Howon University	N/a	Practical Music MT
12	February 16, 2023	Seoul National University	Broadcasting Club	Winter Vacation Special Spin-off Special Guest: Key (Shinee)
13	February 23, 2023	Korea University	Cheerleaders Squad	Winter Vacation Special Spin-off
14	March 2, 2023	Dankook University	Stock Trading Club
15	March 9, 2023	Chung-Ang University	Theater Club

Season 2

List of episodes in Season 2

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
16	March 23, 2023	Yonsei University	Business Administration
17	March 30, 2023	Pusan National University	Mechanical Engineering
18	April 6, 2023	Kyung Hee University	Physics	Appearance by Kim Sang-wook, who is the head of the university's Department of Physics
19	April 13, 2023	Seokyeong University	Hair Design
20	April 24, 2023	Soongsil University	Architecture	Delayed release from the supposed release date of April 20, 2023 in light of the death of Moonbin
21	April 27, 2023	Sungkyunkwan University	Media Communication	Surprise appearances by the remaining BtoB members
22	May 4, 2023	Yeonsung University	Companion Animal Health
23	May 11, 2023	Ajou University	Nursing
24	May 25, 2023	Hansung University	Fashion Design
25	June 1, 2023	Korea Hotel & Tourism Technical College	Hotel Culinary Arts	Appearances by Lee Yeon-bok and Jung Ho-young, who are teaching professors in the college
26	June 8, 2023	Korea Army Academy at Yeongcheon	N/a	Commemoration of 500,000 Subscribers
27	June 15, 2023	Hanyang University	Material Science and Engineering
28	June 22, 2023	University of Seoul	Urban Administration
29	June 29, 2023	Korea Maritime and Ocean University	Navigation Science
30	July 6, 2023	Kyungin Women's University	Early Childhood Education
31	July 13, 2023	Kookmin University	N/a	University Volunteer Work Program in Rural Areas

Season 3

List of episodes in Season 3

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
32	September 21, 2023	Sogang University	Mathematics
33	September 25, 2023	Hongik University	Fine Arts
34	September 28, 2023	Kyung Hee University	Korean Medicine
35	October 5, 2023	Korea University	Philosophy
36	October 19, 2023	Korea National University of Agriculture and Fisheries	Horse Industry
37	October 26, 2023	Hanseo University	Helicopter Operations
38	November 2, 2023	Howon University	Practical Music	Appearances by Kim Jae-seok and Shin Yon-a (Big Mama), who are teaching professors in the university
39	November 9, 2023	University of Hong Kong	N/a	Commemoration of 1,000,000 Subscribers
40	November 16, 2023	University of Hong Kong	Korean Studies	Commemoration of 1,000,000 Subscribers
41	November 23, 2023	Kookmin University	Law
42	November 30, 2023	Sejong University	Hotel and Tourism Management
43	December 7, 2023	Kyungmin University	Fire and Safety Management
44	December 14, 2023	KAIST	Aerospace Engineering
45	December 28, 2023	Inha University	Biotechnology
46	January 4, 2024	Hanyang University Education Research Industry Cluster at Ansan	Dance
47	January 11, 2024	N/a		Finals Exam Professors' Q&A^[a] Pop-up Store Mission

Season 4

List of episodes in Season 4

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
48	March 28, 2024	Ajou University	N/a	Department of Pharmacy Orientation Program
49	April 4, 2024	Hanyang University	Vocal Music	Appearance by Ko Seong-hyeon, who is a teaching professor in the university
50	April 11, 2024	Chung-Ang University	Political Science
51	April 18, 2024	Ewha Womans University	Ceramic Arts
52	April 25, 2024	Seoul National University	Nuclear Engineering
53	May 2, 2024	Osaka University	Applied Science and Engineering
54	May 9, 2024	N/a		Part-time Work Experience in Universal Studios Japan
55	May 16, 2024	Korea Aerospace University	Drone Engineering
56	May 23, 2024	Seoul National University of Education	Elementary Education
57	May 30, 2024	Yeonsung University	Webtoon Contents
58	June 6, 2024	Pukyong National University	Marine Sports
59	June 13, 2024	Gachon University, Medical Campus	Dental Hygiene
60	June 20, 2024	Korean National Police University	N/a
61	June 27, 2024	Woosong University	Railroad Studies
62	July 4, 2024	Korea Air Force Academy	N/a	Commemoration of 1,500,000 Subscribers
63	July 11, 2024	Incheon National University		Seasonal Semester
64	August 22, 2024	N/a		2024 Changing Majors Union MT Special^[b]
65	August 29, 2024	N/a		2024 Changing Majors Union MT Special^[b]

Season 5

List of episodes in Season 5

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
66	September 26, 2024	Kyung Hee University	Theater and Film
67	October 3, 2024	Hankuk University of Foreign Studies	Arabic Language
68	October 10, 2024	Korea National Open University	Sports for All	Appearances by Ryu Seung-min, and Kim Yeon-koung who is currently an enrolled student in the university
69	October 17, 2024	Dankook University	Creative Writing
70	October 24, 2024	Pohang University of Science and Technology	Computer Science
71	November 7, 2024	Eulji University	Paramedic
72	November 14, 2024	Seoul National University of Science and Technology	Visual Design
73	November 21, 2024	Myongji University	Chinese Language and Literature
74	November 28, 2024	Seokyeong University	Modeling & Acting
75	December 5, 2024	Chugye University for the Arts	Orchestral
76	December 12, 2024	Jeju National University	Tourism Management
77	December 19, 2024	Ajou University	Pharmacy
78	December 26, 2024	Mokpo National University	Naval Architecture and Ocean Engineering
79	January 5, 2025	Chung-Ang University	Social Welfare	Delayed release from the supposed release date of January 2, 2025 in light of the Jeju Air Flight 2216 accident
80	January 8, 2025	Seoul National University Graduate School of Dentistry	Dentistry	Lee Chang-sub's final episode before his graduation from the show

Season 6

List of episodes in Season 6

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
81	March 27, 2025	KAIST	Chemistry	First episode with Kai as the main host
82	April 3, 2025	Yong In University	Martial Arts
83	April 10, 2025	Sogang University	English Language and Literature
84	April 17, 2025	Konkuk University	ROTC	Special appearance by Kim Dong-jun
85	April 24, 2025	Jeju National University	Aquatic Life Medicine
86	May 1, 2025	Sangmyung University	Food & Nutrition
87	May 8, 2025	Hongik University	Student Council	Special appearance by Kang Hyeun-seok
88	May 22, 2025	Korea Broadcasting Art School	Voice Acting	Special appearances by Kang Soo-jin and Jang Gyeong-hee
89	May 29, 2025	Hanyang University College of Education	Korean Language Education, Art Education
90	June 5, 2025	Korea Tourism College	Hotel Baking & Pastry
91	June 12, 2025	Yonsei University	Electrical and Electronic Engineering
92	June 19, 2025	Korea University	Korean Literature
93	June 26, 2025	Woosong University	Liberal Studies
94	July 3, 2025	Kookmin University	Ballet
95	July 24, 2025	Seoul National University	Insect Club	Summer Vacation Special 1 Special Guest: Ten (NCT, WayV)
96	July 31, 2025	Seongbuk Senior Welfare Center	N/a	Summer Vacation Special 2 Special Guest: Ralral
97	August 28, 2025	Seokyeong University	Military Science	Summer Vacation Special 3 Special Guest: Jang Won-young (Ive)

Season 7

List of episodes in Season 7

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
N/a	September 18, 2025	N/a		Course Registration Special
98	September 25, 2025	Inha Technical College	Airline Service Management	Special Host: Suho (Exo) Kai is absent due to clash of schedules
99	October 2, 2025	Sungkyunkwan University	Classical Chinese
100	October 16, 2025	Dongguk University	Correctional Science	Special Guest: Lee Chang-sub (BtoB)
101	October 23, 2025	N/a		Group Blind Date Special^[c] Special Host: Lee Chang-sub (BtoB)
102	October 30, 2025	University of Seoul	Sculpture Science	Special Guest: D.O. (Exo)
103	November 6, 2025	Kyungbok University	Clinical Laboratory Science
104	November 13, 2025	Kyonggi University	Japanese Language and Literature
105	November 20, 2025	Korea Hotel & Tourism Technical College	Hotel Food & Beverage Management	Special Guest: Chaeryeong (Itzy)
106	November 27, 2025	N/a		Group Blind Date Special 2^[d] Special Host: Lee Chang-sub (BtoB)
107	December 4, 2025	Chung-Ang University	Advertising and Public Relations
108	December 11, 2025	Daegu Gyeongbuk Institute of Science and Technology	Brain Science	Special Guest: Kim Jae-hyeok (Orbit)
109	December 18, 2025	N/a		Group Blind Date Special 3^[e] Special Host: Lee Chang-sub (BtoB)
110	January 8, 2026	N/a		Group Blind Date Special 4 - International Students^[f] Special Hosts: Lee Chang-sub (BtoB), Chuu Kai is absent due to clash of schedules
111	January 22, 2026	N/a		Group Blind Date Special 5^[g] Special Host: Sehun (Exo)
112	February 5, 2026	N/a		Group Blind Date Special 6^[h] Special Host: Lee Chang-sub (BtoB)
113	February 19, 2026	N/a		Group Blind Date Special 7^[i] Special Host: Lee Chang-sub (BtoB)
114	March 5, 2026	N/a		Group Blind Date Special 8 (Finale) - Second Chance^[j] Special Host: Lee Chang-sub (BtoB)

Season 8

List of episodes in Season 8

Ep.	Upload Date	Featured University/School	Featured Department	Remarks
115	March 26, 2026	Inha Technical College	Secretarial Admin
116	April 2, 2026	Yonsei University International Campus		Dormitory Visit
117	April 9, 2026	Sookmyung Women's University	School of Media	Special Guest: Kyehoon (KickFlip)
118	April 16, 2026	Korea Hotel & Tourism Technical College	Hotel Casino Dealer	Special Guest: Hwasa (Mamamoo)
119	April 23, 2026	Soongsil University	French Language and Literature	Special Guests: Cortis (Martin, Seonghyeon)
120	April 30, 2026	Shinhan University	Optometry	Special Guest: Dohoon (TWS)
121	May 7, 2026	TBA	TBA	Special Guest: Asa (Babymonster)

Reception

Impact

In episode 22 of the series, Lee visited Yeonsung University. During the lunch break period, he discovered the university cafeteria served only 2 types of dishes, and he listened to the dissatisfaction from the students attending the university regarding the university cafeteria's menu. After the episode was aired, an online community post shared that the university cafeteria's menu had increased from 2 types of dishes to 40 types of dishes. An official from the university shared that Lee (and the series) had played a role in executing this change for the new semester.^[5]

Controversy

On October 5, 2023, after the release of episode 35 of the series, many have posted on Korea University's online community regarding the series' filming staff while filming of the said episode was done in the university. Those posts had stated the staff's abuse of authority such as restricting the university's undergraduates from entering the student center, and prohibiting talking among students in the venue while filming. Subsequently, many have requested, through the uploaded video's comments section, for an apology from the series' production team, but had been blocked. This controversy was spread out to various other online communities, with several students from other universities sharing their negative experiences with the filming staff while filming in those universities.^[6] The next day, the series' production team issued an apology as a pinned comment on ootb Studio's latest uploaded video, and later uploaded another apology as a community post on ootb Studio's YouTube channel. As a result of this controversy, a new episode was not uploaded on October 12 and would return the following week after reorganization.^[7]

Spin-off: Jeongwating

During Season 7 of the series, episodes 101 and 106 were spin-off episodes which featured male and female students from different universities gathering to socialize and potentially find a romantic partner. These episodes had received positive and enthusiastic responses, hence on December 2, 2025, ootb Studio announced that this group date spin-off titled "Jeongwating" (Korean: 전과팅) would officially become a regular show beginning January 2026, with new episodes releasing every alternate week during the school winter break in Season 7.^{[citation needed]}

Notes

↑
With the following professors that had previously appeared in the series:
- Lee Sang-won (Episode 4 - Konkuk University Veterinary Medicine department professor)
- Kim Hyoun-woo (Episode 27 - Hanyang University Material Science and Engineering department professor)
- Lee Dong-ki (Episode 41 - Kookmin University Law department dean)
↑
With the following undergraduates that had previously appeared in the series:
- Go Jung-min (Episode 9 - Yong In University Physical Education department)
- Song Seong-hyun (Episode 24 - Hansung University Fashion Design department)
- Jo Su-hyeon (Episode 44 - KAIST Aerospace Engineering department)
- Jung Yoon (Episode 48 - Ajou University Pharmacy department)
- Jo Joon-gi (Episode 49 - Hanyang University Vocal Music department)
- Jeong Mun-sik (Episode 52 - Seoul National University Material Science department)
- Kim Da-hyun (Episode 56 - Seoul National University of Education Elementary Education department)
- Maria Moldrick (Episode 57 - Hankuk University of Foreign Studies Korean Language Education department; from Sweden)
- Choi Jun-hee (Episode 58 - Pukyong National University Marine Sports department)
↑
With the following undergraduates:
- Choi Eun-bi (Ewha Womans University Ceramic Arts department; previously appeared in episode 51)
- Yoon Shin-hyul (Sungkyunkwan University Classical Chinese department; previously appeared in episode 99)
- Han Seung-heon (Sungkyunkwan University Classical Chinese department; previously appeared in episode 99)
- Oh Ji-seok (Sungkyunkwan University Classical Chinese department; previously appeared in episode 99)
- Oh Yoo-na (Ewha Womans University Ceramic Arts department)
- Ha Ye-rim (Ewha Womans University Ceramic Arts department)
↑
With the following undergraduates:
- Park Seung-min (Yonsei University Business Administration department)
- Shin Min-seo (Korea University Business Administration department)
- Han Dae-yoon (Yonsei University Business Administration department)
- Kwon Do-hoon (Yonsei University Business Administration department)
- Kim Joon-ho (Yonsei University Business Administration department)
- Yoon Eun-seo (Korea University Business Administration department)
- Kim Ru-bin (Korea University Business Administration department)
- Lee Ji-ah (Korea University Business Administration department)
↑
With the following undergraduates:
- Kim Sang-do (Hanyang University Mechanical Engineering department)
- Park Eun-bi (Hongik University Korean Language and Literature department)
- Jung Jin-ho (Hanyang University Mechanical Engineering department)
- Kim Pu-reum (Hanyang University Mechanical Engineering department)
- Jung Hyun-jun (Hanyang University Mechanical Engineering department)
- Kim Jun-ah (Hongik University Korean Language and Literature department)
- Park Sung-hye (Hongik University Korean Language and Literature department)
- Ahn Hyo-won (Hongik University Korean Language and Literature department)
↑
With the following undergraduates:
- Kim Joon-ho (Yonsei University Business Administration department; previously appeared in episode 106)
- Kim Ga-yun (Yonsei University Business Administration department)
- Nachi Arakaki (Yonsei University English Language and Literature department exchange student; from Japan)
- Chen Si Hao (Kyung Hee University Media Studies department; from Taiwan)
- Namuundelger Enkhtuvshin/Han Na Na (Yonsei University Biotechnology department; from Mongolia)
- Birken Michael Silitch/Lee Ji Sang (Yonsei University Artificial Intelligence department; from United States)
- Leon Strömvall (Seoul National University Korean Language and Literature department exchange student; from Sweden)
- Khasbaatar Rentsendorj/Jack (Korea University Global Entertainment department; from Mongolia)
↑
With the following undergraduates:
- Ji Sun-jun (Korea National Sport University Physical Education department)
- Song Ah-young (Yonsei University College of Music)
- Choi Ye-rin (Yonsei University College of Music)
- Kim Min-seon (Yonsei University College of Music)
- Kang Ji-won (Yonsei University College of Music)
- Kim Su-gyo (Korea National Sport University Physical Education department)
- Tae Min-jae (Korea National Sport University Physical Education department)
- Kim Hyo-bin (Korea National Sport University Physical Education department)
↑
With the following undergraduates:
- Lee Gyu-won (Seoul National University Aerospace Engineering department)
- Song Si-hyun (KAIST Biochemical Engineering department)
- Wang Hee-chan (Seoul National University Aerospace Engineering department)
- Kim Joon-hee (Seoul National University Aerospace Engineering department)
- Lee Nam-yong (Seoul National University Aerospace Engineering department)
- Kim Bo-bin (KAIST Biochemical Engineering department)
- Jo Soo-bin (KAIST Industrial Design department)
- Kim Bo-kyung (KAIST Industrial Design department)
↑
With the following undergraduates:
- Jo Ho-jin (Seoul Institute of the Arts Acting Major)
- Im So-hyun (Chung-Ang University Psychology department)
- Shin Woo-cheol (Seoul Institute of the Arts Acting Major)
- Hwang Young-cheol (Seoul Institute of the Arts Acting Major)
- Min Kyung-seo (Seoul Institute of the Arts Acting Major)
- Kwon Ye-bin (Chung-Ang University Psychology department)
- Kim Ha-yeon (Chung-Ang University Psychology department)
- Lee Na-young (Chung-Ang University Psychology department)
↑
With the following undergraduates:
- Kim Su-gyo (Korea National Sport University Physical Education department; previously appeared in episode 111)
- Lee Nam-yong (Seoul National University Aerospace Engineering department; previously appeared in episode 112)
- Yoo Joo-won (Hongik University Electrical Engineering Major; previously appeared in the special episode of Season 7 which was released on September 18, 2025)
- Yoon Eun-seo (Yonsei University Business Administration department; previously appeared in episode 106)
- Oh Yoo-na (Ewha Womans University Ceramic Arts department; previously appeared in episode 101)
- Kim Ha-yeon (Chung-Ang University Psychology department; previously appeared in episode 113)