Background: COVID-19 necessitated emergency telepractice for student-led speech-language therapy clinical practicals in training institutions, with limited preparation and evidence-based guidelines. Beyond the pandemic, practitioners and university training sites are likely to continue to offer telepractice necessitating thorough preparation for telepractice services underpinned by a comprehensive understanding of the complexities involved in online therapy. Aims: Adopting realist evaluation principles, our aim in this paper was to explore broadly what works and does not work in a set of student-led telepractice sessions in a diverse, resource-limited context. The broader goal of this project was to provide evidence-based support to enhance the efficiency and success of telepractice sessions in student clinical training contexts. Methods & Procedures: We used qualitative observational methods with reflexive thematic analysis to analyse 28 video recordings and 61 observation notes of student-led paediatric telepractice sessions from a South African university clinic as part of a pilot study. Outcomes & Results: We identified four overarching considerations for student-led telepractice: (1) additional, specific preparation is required, (2) with greater management of technology and adaptation of tasks, especially during times of poor connectivity; (3) telepractice relies heavily on caregiver input and collaboration; and (4) promoting engagement online, holding a client's attention, building rapport and offering reinforcement are critical skills that are complicated by the lack of face-to-face contact. Conclusions & Implications: Our findings indicate that telepractice pedagogy needs to be explicitly taught and students require practical assistance as they learn how to use this service delivery approach effectively. There are some aspects peculiar to telepractice that require unique consideration and planning, especially in contexts where service providers and users may be unfamiliar with this form of service provision. The findings of this pilot study can be used by clinical educators and student clinicians to enhance clinical training opportunities involving telepractice.