In low-cost private schools in India, English as a medium of instruction attracts children of poorly educated parents with a low-income background. A primary survey in Delhi and the National Capital Region finds that mediating primary-level education through an unfamiliar language poses language barriers and adversely affects the learning outcome. The agency in using English for communication is limited. The learning deficit is undetected through successive grades in the primary level due to translation- and memorisation-based teaching processes, and focus on textbook-based exercises. The study finds that parents do not get a fair exchange in return for committing their limited resources towards education.