Due to the Coronavirus pandemic and lengthy absences from the classroom, there is a need for large‐scale remedial programs to support young children to “catch‐up” on literacy and numeracy skills. A stratified randomized controlled trial was used to evaluate the Headsprout Early Reading (HER) program as a parent‐mediated digital literacy intervention. A between‐groups design compared differences in reading‐dependent outcome measures for 36 children assigned to one of three intervention groups: with support, without support, and waitlist‐control. Children completed significantly more episodes when parents received implementation support from the researcher compared to the without support group. Children receiving Headsprout instructions demonstrated marginally greater gains than the waitlist‐control group in posttest outcome measures; however, differences in reading outcomes were not significant between groups at posttesting. The current research provides tentative support for HER and importantly, highlights the importance of providing support for parents implementing interventions at home.