Enrolling in publicly funded early childhood education involves searching for programs, applying, verifying eligibility, and registering with the program. Many families do not complete this process, despite demonstrated interest. In this study, we assessed support for families as they verify eligibility as a means for increasing enrollment completion rates. Working with district administrators, we randomly assigned families to receive either (a) the district's usual, modest communications; (b) the usual communications plus weekly text message reminders with a formal tone; or (c) the usual communications plus weekly personalized, friendly text message reminders. Text message reminders increased verification rates by seven percentage points (regardless of tone), and personalized messages increased enrollment rates for some groups. Exchanges between parents and administrators revealed the obstacles parents confronted. [This article was published in "Educational Evaluation and Policy Analysis" (EJ1262521).]