Middle School Teacher Module for a Brief Bullying Intervention Program

Teacher-Advocates Pre- and Post-Scale (TAPPS) Knowledge and confidence to support defenders was measured using the TAPPS. The TAPPS is an 11 item survey that measures knowledge of buying behaviors, knowledge of how to support students using the STAC strategies, and confidence supporting students who intervene in bullying situations. Items are rated on a 4-point Likert Scale ranging from 1 (Totally Disagree) to 4 (Totally Agree) and were summed to compute a total scale score.

Minimum =11; Maximum = 44 Higher scores are better outcomes

Teacher's Attitudes about Bullying Questionnaire Confidence about managing bullying was measured using the Teacher's Attitudes about Bullying Questionnaire. This questionnaire is a 22 item survey. The 3-item Confidence in Managing Bullying Subscale was used. Items are rated on a 5-point Likert Scale ranging from 1 (Strongly Disagree) to 5 (Strongly Agree) and are summed to compute a total scale score.

Minimum = 3; Maximum = 15 Higher scores are better outcomes

National Education Association Bullying Survey Comfort with managing bullying was measured using items from the National Education Association Bullying Survey. Participants were asked "How comfortable would the participant feel intervening when the participant sees the following bullying behaviors?" followed by five types of bullying (a) Physical, (b) Verbal, (c) Relational, (d) Cyberbullying , and (e) Sexting. Items are rated on a 5-point Likert Scale ranging from 1 (Very Uncomfortable) to 5 (Very Comfortable) and are summed to compute a total scale score.

Minimum = 5; Maximum = 25 Higher scores are better outcomes

Bullying Self-Efficacy Teachers' self-efficacy in handling bullying situations was measured by two items from the National Education Association Bullying Survey. The items are rated on a 4-point Likert Scale ranging from 1 (Strongly Disagree) to 4 (Strongly Agree) and are summed to compute a total scale score.

Minimum = 2; Maximum = 8 Higher scores are better outcomes

The intention to use Teacher STAC strategies was measured using an adapted version of the Use of STAC Strategies for students. Items were adapted from the student version to be appropriate for teachers. The 4-item measures asks teachers "How likely the participant is to support students using these strategies to intervene in bullying in the future?: a) Stealing the Show - support students using humor or distraction to get the attention away from the bullying situation, b) Turning it Over - support a student who reported bullying to the participant or supporting students to report to a principal or School Resource Officer (SRO), c) Accompanying Others - support students who reach out to the student who was the target of bullying, or d) Coaching Compassion - support students who help the student who bullied develop empathy for the target." Items are rated on a 5-point Likert Scale ranging from 1 (Very Unlikely) to 5 (Very Likely).

Program acceptability (e.g., how easy the program is to understand, utility of the program, program characteristics including interesting content and relevance of information presented, participant learning, and interest in recommending program to others) was assessed using a social validity survey composed of 8 items. Items were ranked on a 4-point scale from 1 (Strongly Disagree) to 4 (Strongly Agree).