Abstract: Peer-tutoring Worksheet to Improve Student’s Self-efficacies at Departement of Educational Sciences, Faculty of Education and Teacher Training, Universitas Lampung. Objectives: This quantitative approach research investigated the influence of peer tutoring worksheet to improve student’s self-efficacy in learning. Methods: This study involved 56 students at primary teacher education, department of science education, Universitas Lampung. This study used N-Gain analysis and paired sample t-test to find the differences and improvement between pre-test and post-test in self-efficacy after given peer-tutoring worksheet treatment. Finding: Paired sample t-test indicated that there are the significant differences between pre-test and post-test after given peer tutoring worksheet treatment. N-gain analysis also revealed that there is improvement in student’s self-efficacy in learning after using peer-tutoring worksheet method in learning. With peer-tutoring worksheets, students are able to encourage and support each other so it increased student’s self-efficacy. Conclusion: Peer-tutoring worksheet are effective to improve student’s self-efficacy in learning. Keywords: worksheet, peer-tutoring, self-efficacy, students Abstrak: The Peer-tutoring Worksheet to Improve Self-efficacies of Students in the Educational Sciences Department of the Faculty of Education and Teacher Training in Universitas Lampung. Tujuan: Penelitian kuantitatif ini menyelidiki tentang pengaru lembar kerja peer-tutoring untuk meningkatkan self-efficacy mahasiswa dalam melakukan pembelajaran. Metode: Penelitian ini melibatkan 56 mahasiswa Pendidikan guru sekolah dasar, Jurusan Ilmu Pendidikan, Universitas Lampung. Penelitian ini menggunakan analisis N-Gain dan uji t sampel berpasangan untuk mengetahui perbedaan dan peningkatan antara pre-test dan post-test setelah diberikan lembar kerja peer-tutoring. Temuan: Uji t sampel berpasangan menunjukan bahwa terdapat perbedaan yang signifikan antara pre-test dan post-test setelah diberikan lembar kerja peer-tutoring. Analisis N-Gain juga mengungkapkan bahwa terdapat peningkatan self-efficacy setelah diberikan lembar kerja peer-tutoring. Dengan diberikannya lembar kerja peer-tutoring, mahasiswa mampu untuk mendorong dan mendukung satu sama lain sehingga dapat menaikan tingkat self-efficacy mahasiswa. Kesimpulan: Lembar kerja peer-tutoring efektif untuk meningkatkan self-efficacy mahasiswa dalam pembelajaran. Kata kunci: lembar kerja, peer tutoring, self-efficacy, mahasiswaDOI: http://dx.doi.org/10.23960/jpp.v13.i3.202323