Effectiveness of Climate Change Awareness Education in Secondary School Students

June 12, 2026 updated by: Aynur Aytekin Ozdemir, Istanbul Medeniyet University

The Effect of Climate Change Awareness Education on Knowledge, Attitudes, and Behaviors of Secondary School Students: A Cluster Randomized Controlled Trial

This study aimed to evaluate the effect of a climate change awareness education program on knowledge, attitudes, and behaviors among secondary school students. The study was conducted as a cluster randomized controlled trial in a public secondary school in Istanbul, Türkiye.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This completed cluster randomized controlled trial evaluated the effect of a climate change awareness education program on knowledge, attitudes, and behaviors among seventh-grade secondary school students. The study was conducted in a public secondary school in Istanbul, Türkiye. Two classrooms were randomly assigned to the intervention and control groups. The intervention group received a structured, multi-component education program including classroom-based educational sessions, visual reminder posters, interactive quizzes, and eco-friendly reinforcement materials. The control group continued routine education during the data collection period. Outcomes were assessed at baseline and two weeks after completion of the intervention. After post-test measurements, the education program was also provided to the control group.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
54

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey (Türkiye)
    • Istanbul
      • Istanbul, Istanbul, Turkey (Türkiye)
        • Istanbul Medeniyet University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Being enrolled in the seventh grade of the secondary school where the study was conducted
  • Being able to speak and understand Turkish
  • Having written informed consent from a parent or legal guardian
  • Being willing to participate in the study

Exclusion Criteria:

  • Having a physical or cognitive impairment that prevents communication, watching the educational materials, or completing the measurement tools
  • Having long-term absenteeism that would prevent regular participation in the education sessions during the study period
  • Not having written informed consent from a parent or legal guardian
  • Not being willing to participate in the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Climate Change Awareness Education Group
Participants in the intervention group received a structured climate change awareness education program delivered in the classroom setting. The program included three educational sessions supported by visual educational materials, reminder posters, interactive quizzes, and eco-friendly reinforcement materials. The intervention aimed to improve secondary school students' climate change awareness, environmental attitudes, and environmentally responsible behaviors.
Behavioral: Climate Change Awareness Education Program
The intervention consisted of a structured, multi-component climate change awareness education program developed for seventh-grade secondary school students. The program included classroom-based educational sessions, visual reminder posters, interactive quizzes, and eco-friendly reinforcement materials such as pencils, cloth bags, and flower seeds. Educational topics included the definition and causes of climate change, the difference between weather and climate, the greenhouse effect, greenhouse gases, environmental and human impacts of climate change, climate change effects in Türkiye, zero waste, carbon footprint, water and energy conservation, recycling, and individual actions to combat climate change.
No Intervention: Control Group
Participants in the control group continued their routine education and did not receive any climate change awareness education during the data collection period. After completion of the post-test measurements, the education program was also provided to the control group.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change in Climate Change Awareness Score
Time Frame: Baseline and two weeks after completion of the intervention
Students' climate change awareness was assessed using the Climate Change Awareness Scale for Secondary School Students. The scale consists of 16 items and two subdimensions: cognitive awareness and behavioral awareness. Items are scored on a 5-point Likert scale. Total scores range from 16 to 80, with higher scores indicating higher climate change awareness.
Baseline and two weeks after completion of the intervention
Change in Environmental Attitude Score
Time Frame: Baseline and two weeks after completion of the intervention
Students' environmental attitudes were assessed using the Environmental Attitude Scale for Secondary School Students. The scale consists of two subscales. The first subscale includes 14 items measuring environmental behaviors, and the second subscale includes 21 items measuring environmental feelings, thoughts, and willingness to act. The total score ranges from 35 to 175, with higher scores indicating more positive environmental attitudes and environmentally responsible behaviors.
Baseline and two weeks after completion of the intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Istanbul Medeniyet University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Aynur Aytekin Özdemir, Istanbul Medeniyet University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 1, 2025

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 16, 2026

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 16, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 12, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 12, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 17, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 17, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 12, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2025/020-1570

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Individual participant data will not be shared due to the involvement of minor participants and confidentiality restrictions.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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