Enhancing English Language Proficiency Through International School Collaboration: A Project-Based Learning Experience

Abstract

In an increasingly interconnected world, developing authentic English communication skills is paramount for students. Traditional classroom methods often lack real-world context and opportunities for genuine interaction with native speakers. In many schools the teaching and learning process are focused on grammar instead of the opportunity to practice the language. This study aimed to assess the effectiveness of an online structured international collaboration program in improving the overall English language proficiency of 141 (grade X and XI) Al Ikhlas Cisarua Health Vocational High School students. A mixed-methods approach was employed. Quantitatively, a pre-test and post-test design measured proficiency gains through standardized assessments covering listening, speaking, reading, and writing skills. Qualitatively, data was gathered through student reflections, teacher observations, and analysis of collaborative outputs. The project partnered with some international schools and facilitated synchronous video conferences and asynchronous collaborative tasks over one academic semester. Activities included cultural exchanges, joint presentations on global issues, and peer-to-peer feedback sessions. The analysis revealed a statistically significant improvement in students' English proficiency. The mean score increased from 69 (pre-test) to 80 (post-test), marking an 11-point gain (approximately 15.9% improvement). Qualitative findings demonstrated substantial growth in students' communicative confidence, fluency, intercultural awareness, and motivation. Students reported heightened engagement due to the authentic purpose of communicating with global peers and successfully completing joint projects. Beyond test scores, the project fostered essential 21st-century skills—communication, collaboration, critical thinking, and cultural literacy.