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School-Led program shows promise in taming girl aggression

NCT ID NCT04164472

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether teachers and counselors can effectively run the Friend to Friend (F2F) program to reduce aggression in girls. Over 5,000 students from 40 urban schools participated, with some schools using the program and others serving as controls. The program includes small group sessions for relationally aggressive girls and classroom sessions for all students, aiming to improve problem-solving and reduce hostile behaviors.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Friend to Friend (F2F) behavioral program with coaching
What this could lead to
If successful, this program could provide schools with an effective, staff-led way to reduce aggression and improve social skills in students.
What could go wrong
This is a completed study, but results may not apply to all schools or students. The program requires active coaching from researchers, which may limit real-world use.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

5,250 people

The number who actually took part.

Started

Nov 2019

Finished

Jan 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

7 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Aim 1 Inclusion/Exclusion Criteria: * Inclusion Criteria for Schools 40 schools will be selected on the basis of the following inclusion criteria: 1. Urban school from the School District of Philadelphia 2. Predominately minority student body (\> 80%) 3. Relatively large school with at least 2 classrooms per grade 4. School is not currently involved in a systematic anti-aggression or bullying prevention program 5. School must have at least 1 school counselor who is interested in participating * Inclusion Criteria for Students 1. All boys and girls in regular education 4th-5th grade classrooms will be eligible to participate in screening and outcome assessment activities. 2. Screening will include a peer-rating procedure that will be utilized to identify girls with relational aggression (GRAs). 3. GRAs will be based on if they score \> .50 of a Standard Deviation above mean on relational aggression on the peer-rating measure. These identified girls will be recruited (with written parent consent and student assent) to participate in the F2F with Coaching or control condition. * Inclusion Criteria for Parents 1\) All parents of students in regular education 4th-5th grade classrooms will be eligible to participate in outcome assessment activities. Starting in year 4, parent recruitment will focus on parents of indicated girls. * Inclusion Criteria for Teachers/Counselors 1. Teachers/counselors employed by the participating school sites who provide their verbal consent for participation. 2. Teachers/counselors who currently teach and/or provide services to students in 4th-5th grade. Exclusion Criteria: * Exclusion Criteria for Students 1\) Students who do not speak English. 2) Students whose parents do not speak English or one of the foreign languages into which the Parent Information Sheet for Child Participation has been translated (who therefore cannot opt their child in or out of the study in an informed manner). 3\) Special education students who are not integrated within the regular education classroom. 4\) In intervention schools, boys are excluded from the F2F small group intervention, however, as noted above, all boys will participate in the class portion of the program. Boys in both conditions will complete screening and outcome assessment activities. * Exclusion Criteria for Parents 1\) Parents who do not speak English or one of the foreign languages into which the Parent Information Sheet for Parent Participation and parent questionnaires have been translated. 2\) Parents of students in special education who are not integrated within the regular education classroom. * Exclusion Criteria for Teachers/Counselors 1. Teachers/counselors who do not speak English. 2. Teachers/counselors who are not working with 4th-5th grade students at the participating school sites. Aim 2: Inclusion/Exclusion Criteria * Aim 2 Inclusion Criteria - Schools 1) 10 of Friend to Friend with Coaching schools in Aim 1 will participate in Aim 2. * Aim 2 Inclusion Criteria - Students 1. 4th grade boys and girls who meet the same criteria as described in Aim 1. 2. Similar to Aim 1, a peer rating procedure will be used to identify girls with relational aggression (GRAs) and prosocial role models. * Aim 2 Inclusion Criteria - Parents 1) Same as Aim 1. Aim 2 Inclusion Criteria - Teachers/Counselors 1) Counselors and 4th grade teachers who participated in F2F with Coaching in Aim 1. Aim 2 Exclusion Criteria - Students, Parents, Teacher/Counselors 1\) Same as Aim 1.

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Conditions

The condition(s) this trial relates to.

Aggression

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Children's Hospital of Philadelphia

    Philadelphia, Pennsylvania, 19146, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.