A joint production between MBC and Phunky Studio (the company founded by Han Dong-chul of Produce 101), the show premiered on November 28, 2021, and was broadcast every Sunday at 9 pm KST for 12 weekly episodes until its finale on February 27, 2022.
The show was intended to form a global seven-member girl group with the goal on becoming a Billboard chart-in.
From September 14 to November 12, 2021, a prequel season for the competition titled Hesitation Before Going to School (Korean: 등교 전 망설임; RR: Deunggyo Jeon Mangseolim) was aired on Naver Now.
[5] On October 20, 2021, Girls' Generation's Yuri, (G)I-dle's Soyeon, and former Fin.K.L member Ock Joo-hyun joined the cast of the show as mentors (also known as "homeroom teachers").
[6] On February 9, 2022, a rhythm game titled Superstar Teenage Girls was announced by Dalcomsoft and is based on the show.
[7] On February 26, 2022, the day before the live finale, the 14 finalists performed two original songs, "Lions" and "Sonic Boom", on Show!
Shortly after, Yoon Kyun-sang was introduced as the host of the show known as the "messenger" and explains the first mission known as the "Entrance Exam".
In the first mission, the contestants perform their songs introduced in Hesitation Before Going to School and each would be assessed by the audience and the mentors.
Before each group performed, the first individual ranking announcement was held with the top seven being revealed for the first time.
Choi Yoon-jung and Yoon Chae-won received the highest scores in their respective groups and performed Hwasa's "Twit" to show their skills.
Oh Yoo-jin and Ju Hyo-rin were nominated for elimination after receiving the lowest scores in their respective groups.
In the third mission, the winning and the losing groups collaborate and compete against each other using different concepts and would be assessed by the audience and the mentors.
The team choosing the "pretty" concept performs Iz*One's "La Vie en Rose".
The episode ends with Yoon Kyun-sang announcing the fourth mission known as the "Position Battle".
For each position, the remaining contestants are divided into small teams and perform a song that best fits their musical abilities.
Prior to the completion of the forming group, the final results for each remaining contestant were revealed based on the viewers' votes.
The representatives of the forming group start their battles against members of Team B, with Yoon Chae-won and Lee Tae-rim performing first with Rosé's "On the Ground".
The episode ends with Kim Seon-you and Choi Yoon-jung performing (G)I-dle's "Lion", the latter of which replaced the former as a representative of the forming group.
The sixth mission continues with performances by the remaining representatives of the forming group and members of Team B.
The episode ends with Yoon Kyun-sang announcing the final mission with live performances.
Immediately after the 14 finalists appear on-stage, Yoon Kyun-sang explains the final mission.
The finalists ranked third to fifth were Myung Hyung-seo, Hong Hye-ju, and Kim Ri-won, respectively.
The show ends with the final top 14 appearing on-screen to announce those who failed to become a member of Classy.
"Same Same Different" is an electrifying moomba-infused dance anthem that pulses with a sizzling drum beat, deep 808 bass, and a catchy distorted flute hook.
The song captures the journey from chasing dreams to self-improvement, eschewing competition for inner development, and its focus on individual progress over rivalry.
Through its sharp lyrics, "Same Same Different" illustrates a collective evolution, weaving a narrative of starting anew and chasing dreams together.
[10] Aiki took charge of choreographing the song's stage, breaking away from previous styles to prioritize powerful performances and showcase both her trainees' passion and her own charismatic presence.
With a diverse range of movements and meticulously structured routines, the performance exuded confidence, as noted by MK Sports reporter Nayoung Kim.
Despite being pre-debut, the polished execution left audiences eager to see what the next grade's stage showcases would bring, reflecting an innovative approach that seamlessly extended their journey.
Then,[13] on the 26th, after-school trainees from all grades made an appearance on SBS MTV's The Show, showcasing their talents to a wider audience..[14] In the table below, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.