SM's New Trainee Reality Show Tests the K-Pop Training Formula

Fifteen young men walk into what looks like an ordinary high school classroom. But this isn't about algebra or literature—it's about discovering who among them has what it takes to debut as SM Entertainment's next idol group.

Mnet's upcoming variety show "Reply High School" puts the spotlight on SMTR25, SM's current male trainee lineup, in what the network calls a "time-slip growth variety show." The concept places these aspiring idols in a school setting where they'll compete, collaborate, and ultimately search for answers about their potential debut.

The School of Hard Knocks

The show divides the 15 trainees into different classes, each designed to test various aspects of their readiness for the brutal K-pop industry. But they won't be going it alone—veteran SM artists Super Junior and TVXQ's Changmin appear as mentors, bringing decades of industry experience to guide the next generation.

This isn't SM's first foray into reality programming for trainees. The company has previously used shows like "NCT Life" and various YouTube content to introduce pre-debut artists. However, "Reply High School" represents a more structured, competition-adjacent format that mirrors the success of survival shows like "Produce 101" and "Boys Planet."

The timing is particularly significant. SM Entertainment has been rebuilding its male artist roster following the departures of several major acts and the ongoing legal battles with former artists. SMTR25 represents the company's investment in its future, and this show serves as both a training ground and a marketing vehicle.

Beyond Entertainment: The Trainee Economy

What makes "Reply High School" interesting isn't just the entertainment value—it's what it reveals about the evolving economics of K-pop debut preparation. Traditional trainee systems operate largely behind closed doors, with companies investing millions in training without guaranteed returns. By partnering with Mnet, SM transforms this traditionally expensive process into content that can generate revenue while it happens.

The show format also addresses a growing challenge in the K-pop industry: fan engagement during the pre-debut phase. With social media creating demand for constant content, companies can no longer afford to keep trainees completely hidden until debut. "Reply High School" allows SM to build fandoms for these trainees before they even have a group name.

For the trainees themselves, this represents both opportunity and pressure. Television exposure can fast-track their careers, but it also means their mistakes and struggles become public entertainment. The "school" setting adds another layer—it infantilizes young adults who are already operating in a highly adult industry.

The Mentor Dynamic

The involvement of Super Junior and Changmin raises questions about how senior artists view their role in developing juniors. Both acts have navigated SM's system for over two decades, experiencing its highs and controversies. Their participation suggests a willingness to invest in the company's future, but also highlights the generational pressures within K-pop.

These mentorship roles also serve the senior artists' careers. As Super Junior members pursue individual projects and military service, and as TVXQ continues as a duo, variety show appearances help maintain their visibility. It's a symbiotic relationship that benefits all parties—if it works.

The show's success could influence how other major agencies approach trainee development. HYBE, JYP, and YG Entertainment are all watching to see whether this model of transparent, entertainment-focused training produces better results than traditional methods.