Introduction: Cancer is a serious disease with a high mortality rate in the world and in Turkey today. Skin cancer, which is among the most common types of cancer, is increasing every year in many countries in the world such as Australia, America, New Zealand, and in Turkey. The most dangerous type of skin cancer with a high mortality risk is melanoma. According to the Turkish Cancer Statistics, melanoma is among the ten most common cancer types among children aged 0-14 years. This situation constitutes a public health problem.

Aim: This research was planned to determine the effect of education given to parents of secondary school students about skin cancer, Skin Self Examination (SSE) and Sun Protection Behaviors on their children's sun protection behaviors.

Hypotheses:

H0-1: There is no difference between the education and control groups in the education given to parents about skin cancer and SSE, about skin cancer sun knowledge.

H1-1: There is a difference between the education given to parents about skin cancer and SSE, and the intervention and control groups about skin cancer sun knowledge.

H0-2: There is no difference between the education group and the control group in terms of the education given to parents about skin cancer and SSE and their children's sun protection behaviors.

H1-2: There is a difference between the education group and the control group in terms of the education given to parents about skin cancer and SSE and their children's sun protection behaviors.

Design and Venture Details: The research will be conducted in a randomized controlled experimental design. The research will be carried out between February 2022 and June 2022. The sample of the study will consist of 300 parents, 150 of whom are in the intervention group (education group) and 150 in the control group, who have students studying in two different public schools in Turkey and agree to participate in the research. In order not to affect the groups from the applications, the schools were first randomized. Research data will be collected by the researcher in two stages as pre-test and post-test, using the Socio-demographic Form, the Descriptive Information Form, the Skin Cancer and Sun Knowledge Scale (SCSKS) and the Parental Sun Protection Scales (PSPS). After collecting the pre-test data from the intervention group and control group, training will be given to the intervention group with a PowerPoint presentation on What is Skin Cancer, SSE and Sun Protection Behaviors. brochure material will be distributed. The trainings are planned to be approximately 40-45 minutes. A follow-up period of 4 months (120 days) will be expected after the training, and no intervention will be made to the control group. At the end of the follow-up period, post-test data will be collected from both groups. An information brochure will be given to the control group in line with the principle of equality immediately after the completion of the post-tests.

Participants:

1. Education (Intervention) Group: In the pre-test phase of the research; Education group parents, those who signed the Informed Voluntary Consent Form and agreed to participate in the research will fill out the questionnaire. Data collection will take approximately 20-25 minutes. Afterwards, the researcher will give training to the training group about skin cancer, skin self-examination and sun protection behaviors. The tutorials are planned as a PowerPoint demonstration. It will be divided into five groups in total, in groups of 20-25 people. The duration of the trainings is planned to take approximately 40-45 minutes. The content of the training was prepared in line with the literature review and taking the opinion of an expert (an expert in the field of Public Health Nursing). As a method; It will be in the form of narration, question and answer, brainstorming. Materials used in education; Colorful brochures on the subject will be given to reinforce the slide show and post-training information. A follow-up period of four months (120 days) will be expected after the training given. At the end of the follow-up period (120 days), the training group will have to fill out the post-test questionnaires during the post-test phase. Participants will be reminded of the purpose of the research. Approval of the Informed Consent Form will be received. Completing the post-test questionnaires will take approximately 20-25 minutes.

Control Group: In the pre-test phase of the study; control group parents, those who signed the Informed Consent Form and agreed to participate in the study will fill out the questionnaire. Data collection will take approximately 20-25 minutes. During the follow-up period (120 days), no intervention will be made on the control group. At the end of the follow-up period (120 days), the control group will have to fill out the post-test questionnaires during the post-test phase. Participants will be reminded of the purpose of the research. Approval of the Informed Consent Form will be received. Completing the post-test questionnaires will take approximately 20-25 minutes. A brochure training material will be distributed to the parents of the control group, in line with the principle of equality, immediately after the completion of the post-tests.

Inclusion Criteria:

• To agree to participate in the research,
• Being a parent with a child between the ages of 10-14,
• Being open to communication and cooperation,
• Being able to read and write, Randomization: In order not to affect the groups from the applications Schools were randomized. Schools hold closed-envelope lots, it is selected by the method. it is divided into intervention Group (Training Group) and control Group. Yalçın Eskiyapan Secondary School (Group I) Education Group was assigned as the Hacı Mustafa Tarman Secondary School (Group II) Control Group. Intervention and control groups in order to reduce selection bias and control the variables that may have an effect on the outcome variables; Randomized assignment was made by a statistician who did not know the student names and characteristics. In determining the students to be included in the research; student lists and Excel 2016 program were used, Simple Random Sampling was done. The student lists assigned to the groups by the expert were sent to the researcher before the initiatives started. It was planned to include one parent of each student in the study by selecting students. The researcher who evaluated the outcomes was blinded to determine the groups.

Data Collection:Data of the study;Introductory information form: Sociodemographic form, Skin Cancer Risk Features, Skin Cancer and SSE Awareness Status, SSE Information Form,Skin Cancer and Sun Knowledge Scale (SCSKS),Parental Sun Protection Scales (PSPS), these scales will be used.

Statistics to be made: The data obtained in the research will be evaluated with the Statistical Package for Social Sciences (SPSS Inc. Chicago, USA) version 25.0 statistical analysis program for Windows. In the evaluation of data, descriptive statistics on continuous data; mean, standard deviation, median, minimum, maximum values; For discrete data, numbers and percentages will be used. Kolmogorov Smirnov test will be used to examine the conformity of the data to the normal distribution. Chi-square test will be used to compare the descriptive characteristics of parents and their children in the intervention and control groups, and to compare the skin cancer and SSE knowledge status of the parents in the intervention and control group. Wilcoxon test will be used to compare the pretest and posttest scores of the intervention and control groups. Mann Whitney U test will be used to compare scale scores with two-group independent variables. The t-test will be used to compare the normally distributed continuous data in two groups. Chi-square and Fisher's Exact tests were planned to be used in group comparisons (cross tables) of nominal variables. p<0.05 will be accepted as the statistical significance limit. It will be interpreted that it is statistically significant for p values less than or equal to this value, and not statistically significant for larger values.

Ethical Issues: Health Sciences University Gulhane in order to carry out the research Ethics committee approval numbered 2020-98 was obtained from the Non-Interventional Research Ethics Committee. In order to carry out the research in the designated schools, the necessary permission was obtained from the Ankara Governorship National Education Directorate, numbered 14588481-605.99-E.1192083. Parents who will participate in the research will receive the consent of the Informed Voluntary Consent Form explaining the purpose and subject of the research, the risks, benefits, harms and confidentiality of the research.

Key Words: Nursing, Self skin examination, Skin Cancer, Sun Protection.

Inclusion Criteria:

• To agree to participate in the research,
• Being a parent with a child between the ages of 10-14,
• Being open to communication and cooperation,
• Being able to read and write,

Exclusion Criteria:

• Having a situation that may prevent written and verbal communication,
• Not to have a child between the ages of 10-14,
• Not agreeing to participate in the research,
• Being illiterate,

At the end of the study, it will be given in the publication.

end of study, September 2022

Publication in any journal in Pubmed.

Randomization:In order not to affect the groups from the applications Schools were randomized.Schools hold closed-envelope lots,it is selected by the method.It is divided into intervention and control Group.YalçınEskiyapanSecondarySchool(Group I)Education Group was assigned as the HacıMustafaTarmanSecondarySchool(Group II)Control Group.Intervention and control groups in order to reduce selection bias and control the variables that may have an effect on the outcome variables;Randomized assignment was made by a statistician who did not know the student names and characteristics.In determining the students to be included in the research;student lists and Excel2016program were used,Simple RandomSampling was done.The student lists assigned to the groups by the expert were sent to the researcher before the initiatives started.It was planned to include one parent of each student in the study by selecting students.The researcher who evaluated the outcomes was blinded to determine the groups.