Progress Software Supports Preply's Study on Personalized Language Learning Effectiveness
- Preply's study shows personalized tutoring significantly improves English proficiency for Spanish-speaking adults in just 24 to 48 hours.
- 94% of participants felt more fluent, and 97% reported increased confidence in speaking after completing over 24 lessons.
- Preply emphasizes the effectiveness of tailored education in achieving personal and professional language learning goals.

Preply’s Impact Study Validates Effectiveness of Personalized Language Learning
Preply, the leading global language learning marketplace, announces the remarkable findings from a recent 12-week impact study in partnership with Leanlab Education, a nonprofit dedicated to educational technology research. The study focuses on the efficacy of personalized tutoring, exploring its influence on the English language proficiency of 67 native Spanish-speaking adults. Participants engage in a tailored Preply program specifically designed to enhance their English skills for professional development. The results illustrate a significant improvement, with one in three learners achieving a full level increase in their Common European Framework of Reference (CEFR) test scores, demonstrating the program's effectiveness in accelerating language acquisition.
The study reveals that learners progress at a pace substantially faster than conventional benchmarks, which typically require between 160 to 240 hours to advance one CEFR level. Notably, many participants achieve similar advancements in just 24 to 48 hours of tutoring. In addition to quantitative improvements, qualitative feedback from the study indicates a substantial rise in learners' confidence. An impressive 94% of participants report feeling more fluent after completing over 24 lessons, while 97% express increased confidence in their speaking abilities, and 94% feel assured in their writing skills. These findings underscore the role of personalized education in fostering both skill development and self-assurance among language learners.
Preply’s CEO, Kirill Bigai, emphasizes the study's validation of their core belief in the power of personalized tutoring to facilitate accelerated language learning. He notes that the results affirm how tailored educational approaches can help individuals meet their personal and professional aspirations. Leanlab Education's CEO, Katie Boody Adorno, echoes this sentiment, highlighting that the right support is crucial for expediting English language acquisition. The study's insights contribute to a broader understanding of the importance of real-time conversations and customized guidance in effective language education. To further showcase these findings and the transformative experiences of its learners, Preply launches the Proven Progress Platform, illustrating how the company’s approach empowers individuals to achieve their learning goals.
In a rapidly evolving educational landscape, Preply continues to lead with its robust network of over 100,000 tutors who teach more than 90 languages. As the company combines human-led instruction with AI-enabled technology, it remains committed to enhancing the learning experience and ensuring that personalized education becomes a staple in the language acquisition process. The findings from this study not only reinforce Preply’s market position but also highlight a growing trend in the education sector towards tailored, learner-centric approaches.