Due to the COVID-19 pandemic, assessment and testing processes have been shifted to an online environment. Therefore, this unexpected shift requires more recent research in the field of online assessment. Based on this requirement, the present research aimed to explore female EFL students’ perceptions of an online English achievement exam by focusing on these dimensions: availability and accessibility, instructions, and mode of delivery. The participants were preparatory year students at the English Language Institute (ELI) at the University of Jeddah. To serve the research aim, the research used a mixed-methods approach. Students (n =49) participated in the quantitative phase by answering an online survey and 2 students were interviewed in the qualitative phase. The quantitative data revealed that the students had a positive perception of the online exam availability, accessibility, instruction, and mode of delivery. More particularly, the qualitative data explained that the clear online exam instructions and suitable mode of delivery have significantly improved these positive perceptions.