This experiment tested the use of a nudge-based texting intervention on the moral reasoning development of preservice teachers. The intervention sent cellphone text messages of moral scenarios in one of two forms over the course of 42 days (6 weeks). Results showed no significant interaction between group assignment and time across all four indices of moral reasoning development. Findings present initial evidence that nudge-based text messages do not affect moral reasoning development of preservice teachers. Discussion reviews implications with design and use of a nudge-based approach to support moral reasoning development among teachers.