| Genre: | Variety show |
| Starring: | Lee Chang-sub (BtoB) |
| Country: | South Korea |
| Language: | Korean |
| Num Seasons: | 5 |
| Num Episodes: | 65 |
| Location: | South Korea |
| Camera: | Multi-camera |
| Runtime: | Around 30 minutes |
| Company: | ootb Studio |
| Network: | YouTube |
| Last Aired: | present |
Changing Majors (also known as Jeongwaja) is a South Korean variety web series starring Lee Chang-sub of BtoB. The series features Lee exploring various universities, colleges and schools, and reviewing the courses offered inside.[1] Each episode of the series would be released at 18:00 (KST) every Thursday through ootb Studio's YouTube channel.
| Upload Date | Featured University/School | Featured Department | Remarks | |
|---|---|---|---|---|
| 0 | November 9, 2022 | 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 | Practical Music MT | |
| 11 | January 26, 2023 | |||
| 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 | |
| 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 | 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 | University Volunteer Work Program in Rural Areas | |
| 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 | Commemoration of 1,000,000 Subscribers | |
| 40 | November 16, 2023 | Korean Studies | ||
| 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 | Finals Exam Professors' Q&A Pop-up Store Mission | ||
| Upload Date | Featured University/School | Featured Department | Remarks | |
|---|---|---|---|---|
| 48 | March 28, 2024 | Ajou University | 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 | 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 | ||
| 61 | June 27, 2024 | Woosong University | Railroad Studies | |
| 62 | July 4, 2024 | Korea Air Force Academy | Commemoration of 1,500,000 Subscribers | |
| 63 | July 11, 2024 | Incheon National University | Seasonal Semester | |
| 64 | August 22, 2024 | 2024 Changing Majors Union MT Special | ||
| 65 | August 29, 2024 | |||
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.[2]
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.[3]
Eventually, on October 6, 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.[4]