My Teenage Girl

The show starts with performances by the mentors known as the "homeroom teachers", who would assess the contestants known as the "students" and help them succeed in the 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. There are two rounds for each performance. To pass the first round, the contestants must receive at least 75% of the votes from the audience before being assessed by the mentors. To pass the second round, each contestant must receive at least three votes from the mentors before being sent to a classroom according to their group. Only 40 contestants (10 from each group) would move on to the second mission while those who fail a round or have their group full would be eliminated. 23 contestants performed first in this episode, with 15 moving on to the second mission and the other 8 being eliminated after failing a round.

The first mission continues with performances by 26 contestants. During the mentors' assessment of one of the performing teams from Grade 3, Ryou Jay-hyun was mistakenly eliminated after the voting system miscounted her votes with two, but was able to move on to the second mission after another vote from one of the mentors was added to the voting system. Unaired performances by some performing acts were aired with results for each performing act. Out of 26 contestants performing in this episode, 21 moved on to the second mission while the other 5 were eliminated after failing a round.

The first mission continues with performances by the other 34 contestants. At the end of the first mission, the remaining contestants noticed there would be a change on the number of contestants who would move on to the second mission. Due to an excessive number of contestants, each group would have 16 contestants instead of the original 10 and some contestants who were originally eliminated returned to the show, bringing a total of 64 passers for the first round. The mentors held a meeting to discuss and decide who would mentor each group. The results for the mentors were revealed and each was assigned a group: Jeon So-yeon became the mentor for Grade 4, Ock Joo-hyun became the mentor for Grade 3, Kwon Yu-ri became the mentor for Grade 2, and Aiki became the mentor for Grade 1. Following the addition of originally eliminated contestants, the second mission known as the "Grade Battle" was revealed. In the second mission, each group competes against each other and would be assessed by the audience and the mentors. The winning group is exempt from elimination and the other groups face elimination. After the mid-point check of each group, the mentors noticed only 40 contestants (10 from each group) would actually perform in the second mission, forcing themselves to eliminate 24 contestants (six from each group) from the show. Six contestants from Grade 2 who performed poorly in the mid-point check were eliminated first.

The episode starts with eliminations by 18 other contestants (six from each group). Before the eliminations, each of the three other groups performed in the mid-point check to determine the eliminated contestants. In a survey that was held after the mid-point check, Grade 4 was chosen as the "weakest" group for not practicing enough before the mid-point check. Following the eliminations in the mid-point check, the second mission begins. Before each group performed, the first individual ranking announcement was held with the top seven being revealed for the first time. According to Yoon Kyun-sang, the group with the highest score in each round would take a spot in the forming group one by one, making the latter consist of seven contestants regardless of their winning groups. Grade 3's Kim Hyun-hee ranked first out of the 40 remaining contestants, making the first spot in the forming group available to a Grade 3 contestant.

Following the first individual ranking announcement, grades 3 and 4 performed first with results after each performance. Choi Yoon-jung and Yoon Chae-won received the highest scores in their respective groups and performed Hwasa's "Twit" to show their skills.

The episode starts with final results for grades 3 and 4 in the second mission. Kim Min-ji and Kim Da-som were nominated for elimination after receiving the lowest scores in their respective groups. According to the rules for the second mission, the nominee in the losing group would be eliminated from the show. Grade 4 won against Grade 3 in the second mission, resulting in Kim Min-ji being eliminated from the show.

Following the final results for grades 3 and 4, grades 1 and 2 performed with results after each performance. Kim Seon-you and Kim Ri-won received the highest scores in their respective groups and performed Chungha's "Snapping" to show their skills. Oh Yoo-jin and Ju Hyo-rin were nominated for elimination after receiving the lowest scores in their respective groups. Grade 1 won against Grade 2 in the second mission, resulting in Ju Hyo-rin being eliminated from the show.

The second mission ends with Yoon Kyun-sang announcing the third mission known as the "Concept Battle". 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 winning groups compete for first place while the losing groups compete for third place. The winning group ranked first and the losing group ranked third are exempt from elimination, the former of which would take the second spot in the forming group. Grades 2 and 3 were divided into teams and must choose one of the following concepts: pretty, competent, or talented. The team choosing the "pretty" concept performs Oh My Girl's "Dun Dun Dance". The team choosing the "competent" concept performs Beyoncé's "Run the World (Girls)". The team choosing the "talented" concept performs Red Velvet's "Red Flavor". The "pretty" and the "competent" teams performed first with results after each performance.

The episode starts with the "talented" team from the previous episode performing. After the team's performance, the results for the team were announced with feedback from the mentors. Following the performances by grades 2 and 3, the final results for both groups were announced with Grade 2 ranking third. Grade 3 ranked fourth in the third mission and faced elimination. According to the rules, the contestant in the losing group with the least votes from the viewers would be eliminated. Park Hyo-lim was eliminated from the show for receiving the least votes from the viewers.

Following Park Hyo-lim's elimination, grades 1 and 4 performed, but were assigned the same concepts as grades 2 and 3 and divided into teams. The team choosing the "pretty" concept performs Iz*One's "La Vie en Rose". The team choosing the "competent" concept performs CL's "Hello Ladies". The team choosing the "talented" concept performs Hyuna's "I'm Not Cool". Each team formed by grades 1 and 4 performed with results after each performance. Following the performances by grades 1 and 4, the final results for both groups were announced with Grade 1 ranking first and taking the second spot in the forming group. Grade 4 ranked second in the third mission and faced elimination. Kim Da-som was eliminated from the show for receiving the least votes from the viewers. The episode ends with Yoon Kyun-sang announcing the fourth mission known as the "Position Battle".

The episode starts with the introduction of the fourth mission known as the "Position Battle". In the fourth mission, each group collaborates and competes against each other based on their positions. They can only perform based on the following positions: vocal, rap, dance, or a combination of the three positions known as "all-rounder". For each position, the remaining contestants are divided into small teams and perform a song that best fits their musical abilities. Before the fourth mission, the second individual ranking announcement was held with changes in the top seven. Grade 4's Myung Hyung-seo and Yoon Chae-won entered the top seven for the first time, the latter of which replaced Grade 3's Kim Hyun-hee in first place and made the third spot in the forming group available to a Grade 4 contestant. Following the second individual ranking announcement, the vocal and dance teams performed first with rehearsals before each performance.

The fourth mission continues with performances by the remaining teams. Rehearsals were held before each remaining performance to check the remaining contestants' performance skills. By the end of the fourth mission, the remaining spots in the forming group were revealed, resulting in the completion of the forming group. The group formed by the show would consist of one contestant from Grade 2 and two contestants each from other groups. Prior to the completion of the forming group, the final results for each remaining contestant were revealed based on the viewers' votes. The three contestants from each alliance with the least votes from the viewers would be eliminated from the show. Grade 1's Jung Yu-ju and Jung Si-woo, Grade 2's Park Hyo-won, Grade 3's Ryou Jay-hyun and Kim Su-hye, and Grade 4's Lee Yu-min were eliminated from the show for receiving the least votes in their respective alliances.

The fourth mission ends with Yoon Kyun-sang announcing the fifth mission known as the "Representative Selection". In the fifth mission, each group competes against themselves and forms two small teams to perform an assigned song. When each team finishes performing their song, both teams perform a dance break combining both songs. Grade 3 formed two trios and performed first with the following songs: Twice's "Likey" and Mamamoo's "Hip".

The fifth mission continues with performances by other groups. After Grade 4's performances, the first representatives of the forming group were revealed based on their votes during the fifth mission. Grade 1's Kim Seon-you and Park Bo-eun, Grade 2's Kim Ri-won, Grade 3's Kim Hyun-hee and Kim Yun-seo, and Grade 4's Yoon Chae-won and Kim Yoo-yeon became the first representatives of the forming group after receiving the most votes in their respective groups. Shortly after, eliminations for other contestants were held. The nine contestants with the least votes from the viewers would be eliminated from the show. Grades 1 and 2 eliminated four contestants each while Grade 4 eliminated Song Ye-rim from the show. Grade 3 became the only group who survived the eliminations, meaning the remaining contestants in that group survived.

The fifth mission ends with Yoon Kyun-sang announcing the sixth mission known as the "Representative Takeover". In the sixth mission, the representatives of the forming group compete against 14 other contestants known as "challengers". The 14 contestants are divided into two teams of seven and are assigned the following songs: Everglow's "Dun Dun" and Itzy's "Mafia in the Morning". The representatives of the forming group perform an original song titled "Surprise". The members of the winning team would perform with the representatives of the forming group separately. The episode ends with two contestants forming a trio with a representative of the forming group.

The sixth mission continues with the formation of the two "challenger" teams by doing a spinning challenge. Shortly after, both teams do splits to determine which team would perform first. Team B performed first after winning the split challenge. Before Team B's performance, the representatives of the forming group performed "Surprise" to showcase their skills as a team. Shortly after, both "challenger" teams performed to determine which team would perform with the representatives of the forming group. Team B won against Team A with 356 votes, the latter of which was nominated for elimination after losing with 282 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". Yoon Chae-won remained as a representative of the forming group after winning against Lee Tae-rim. 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.

This episode was originally scheduled to air on February 6, 2022; however, the episode was delayed to February 20 due to the 2022 Winter Olympics, as well as two scheduled online fan meetings overlapping the episode's broadcast.

The sixth mission continues with performances by the remaining representatives of the forming group and members of Team B. By the end of the sixth mission, Grade 1's Park Bo-eun and Grade 4's Yoon Chae-won and Kim Yoo-yeon remained as representatives of the forming group. Grade 2's Minami, Grade 3's Choi Yoon-jung, and Grade 4's Hong Hye-ju and Myung Hyung-seo became representatives of the forming group after replacing four original representatives during the sixth mission. The representatives were exempt from elimination and automatically moved on to the live finale. Shortly after, Yoon Kyun-sang announced the other seven finalists by their ranks in descending order. The seven nominees with the least votes from the viewers were eliminated from the show and finished as semi-finalists. Grade 2 became the only group whose remaining contestants moved on to the live finale. The episode ends with Yoon Kyun-sang announcing the final mission with live performances.

The finale was originally scheduled to air on February 13, 2022; however, the finale was delayed to February 27 due to the 2022 Winter Olympics, as well as a scheduled online fan meeting overlapping the finale's broadcast.

The finale starts with the 14 finalists appearing on-stage. Prior to their appearances, the group name was briefly revealed as Classy to introduce the forming group. Immediately after the 14 finalists appear on-stage, Yoon Kyun-sang explains the final mission. In the final mission, both teams compete against each other while performing two songs. One of the two songs performed by each team is introduced to the viewers as part of the final mission. The team with the highest score would earn 50,000 points as a benefit. Live voting was open during the final mission to determine the final members of Classy. Prior to the closure of live voting, the results for both teams were announced, with the "challenger" team winning against the representatives with 478 points. Shortly after, the 14 finalists thanked their mentors for helping them succeed in the show. The final results for the finalists were announced to form Classy. The finalists finishing in the top seven would become members of Classy. Park Bo-eun was announced as the first member of Classy after finishing in sixth place. The finalists ranked third to fifth were Myung Hyung-seo, Hong Hye-ju, and Kim Ri-won, respectively. Won Ji-min and Kim Seon-you were announced as candidates for first place, the former of which finished in first place with 243,302.4 points. Yoon Chae-won was announced as the last member of Classy after finishing in seventh place. The show ends with the final top 14 appearing on-screen to announce those who failed to become a member of Classy.

The finale was broadcast live on February 27, 2022. The finalists finishing in the top seven formed Classy.