As ESP is increasingly applied in many non-English departments of higher education institutions, evaluating the course is pivotal as it gauges to what extent the program is successful to meet learners' needs and the overall course goals. Hence, this study was set out to evaluate on-going ESP courses held in two private higher education institutions in Yogyakarta Province by evaluating three aspects: the ESP teachers, the course materials, and the course. The data were collected through an online survey of 149 students of Universitas Muhammadiyah Yogyakarta (UMY) and AMPTA Tourism College and processed with descriptive statistics. Overall, the results suggested that both institutions' students agreed that the three aspects met the set criteria, yet some implications worth take into account. Concerning the ESP practice at the Management Study Program of UMY, sub-aspects that needed improvement were teachers' monitoring during students' activities, the distribution of language skills in the materials, and the variety of learning activities. In the context of the Tour and Travel Business Study Program of AMPTA Tourism College, it demanded attention to teachers' preparedness before teaching, the skills and knowledge relatedness to students' future jobs, and the classroom size.