Setting
The study was conducted in 36 geographically dispersed secondary schools in England. Each school contained students from Key Stages (KS) 3 and 4 of the English educational system. Within participating schools, students in Years 7, 9, and 11 were eligible for inclusion in the study. KS3 includes Years 7 and 9, and students in these years are typically between 11 and 14 years old. KS4 includes Year 11, and students in Year 11 are typically 15 to 16 years old.
Study sample
The analytic sample included 29 schools and 58 KS groups (29 KS groups in the intervention condition and 29 KS groups in the comparison condition). For the absenteeism outcome, the analytic sample included 7,436 students in the intervention group and 7,919 in the comparison group. For the general mathematics achievement outcome, the analytic sample included 5,613 students in the intervention group and 5,977 students in the comparison group. For the general literacy achievement outcome, the analytic sample included 5,376 students in the intervention group and 6,037 students in the comparison group.
In both the intervention and comparison groups, 55% of students were male. 14% of students in the intervention group and 18% of students in the comparison group were eligible for free school meals. 17% of students in the intervention group and 19% of students in the comparison group were English as an Additional Language (EAL) status. 18% of students in the intervention group and 20% of students in the comparison group were characterized as having Special Educational Needs (SEN). 73% of students in the intervention group and 67% of students in the comparison group were "White British." 57% of students in the intervention group and 77% of students in the comparison group were in KS3.
Intervention Group
The intervention is the Parent Engagement Project (PEP), an intervention designed to improve student outcomes through increased parent engagement by text message. It is a year-long, school-level intervention. The intervention consists of text messages sent directly by schools to parents at specific times and intervals during the school year. The types of text messages sent included advance notice of tests and important deadlines (4 days and 1 day in advance); notice of missing homework; and summaries of daily lessons, with conversational prompts (rotated weekly across the subjects of math, reading, and science). The text messages were designed to be sent by schools via their existing school information management systems. The intervention was intended to send approximately 65 texts to parents throughout the year; the average number texts actually sent to each parent was 30, with a range from 15 to 77. An average of 22.19 texts were sent about upcoming assessments, 11.39 texts were send regarding missing homework, and 5.08 texts were sent with conversational prompts.
Comparison Group
The comparison condition was "business as usual." Parents received standard school-level communication via existing school information management systems, email, telephone calls, letters, and student homework diaries/planners. The comparison condition did not receive any text messaging.
Support for implementation
The intervention is intended to be used with existing school information management systems. Implementing schools and teachers received an initial training for a full day in September 2014 and ongoing support throughout the evaluation. An additional half-day of training was held in January 2015. Detailed instructions were provided on the content of the text messages. Each school appointed one staff member to be the project liaison officer, who was responsible for coordinating the text messages within the school. The study team also employed research assistants who were responsible for overseeing the implementation of PEP across schools. Each research assistant worked with a group of project liaison officers to facilitate consistent implementation across schools, including obtaining test dates and conversation prompts. More than 70% of school personnel reported positive reactions to the training received and being confident about implementing the intervention. Video recordings of the initial training were made available to all schools.