This study was aimed at primarily to develop a tool to evaluate sexuality education and secondarily to test effectiveness through application of developed evaluation tools in elementary school. The results from this study were summarized below: 1. On the basis of targeting the lower grades (1st- 3th year) and the higher grades (4th-6th year) elementary school students' sexuality education guidebooks published by Korea Ministry of Education & Human Resources Development, 71 preliminary items targeting the lower grades, 90 preliminary items targeting the higher grades were developed. 2. Through the validity test about the contents of the preliminary items three times, the items were regulated to 65 items targeting the lower grads and 57 items targeting the higher grades. And then, the preliminary items were re-regulated to 40 items separately. Then, pre-test which targeting each 30 students was enforced. 3.Finally, the evaluation tools for sexuality education that consisted of 40 items targeting the lower grades and the higher grades were developed. 4.Reliability test of the developed tools, sexuality education evaluation tools showed alpha coefficient of internal consistency were 0.8355 (for the use of the lower grades) and 0.8881 (for the use of the higher grades). 5.To apply the developed sexuality education evaluation tools, 10-times sexuality education were carried out class unit and pre-post test were done using same questionnaire, which contains developed tool, there were significant difference in low grade (t=16.548, p=0.000), high grade (t=14.773, p=0.000). The results of this study suggest that the evaluation tool for sexuality education in elementary school may be a useful tool with a high degree of reliability and validity. In this sense, the evaluation tool for sexuality education developed by this study can be effectively utilized in Korea elementary schools.
Education* ; Evaluation Studies as Topic ; Humans ; Korea ; Reproducibility of Results ; Sexuality* ; Staff Development ; Child Health ; Surveys and Questionnaires

PURPOSE: The aim of this study was to examine the expression of HLA-DR surface antigen in undifferentiated human umbilical cord blood (hUCB) derived mesenchymal stem cells (MSCs) and after osteogenic, chondrogenic, and adipogenic differentiation. MATERIALS AND METHODS: hUCB-derived MSCs were differentiated into osteogenic, chondrogenic, and adipogenic lineages. Differentiation was assessed by immunohistochemical staining and RT-PCR. The expression of HLA-DR was assessed with antihuman HLA-DR antibody in undifferentiated hUCB-derived MSCs and after tri-lineage differentiation. RESULTS: HLA-DR expression was negative in undifferentiated hUCB-derived MSCs and after osteogenic and adipogenic differentiation. However, HLA-DR surface antigen was expressed after chondrogenic differentiation. CONCLUSION: The immunologic properties of hUCB-derived MSCs differ from known reports on bone marrow derived MSCs from the results of this study. Careful immunological survey seems to be needed in case of considering the transplantation of hUCB-derived MSCs differentiated into chondrocytes or cartilaginous tissue.
Antigens, Surface ; Bone Marrow ; Chondrocytes ; Fetal Blood* ; HLA-DR Antigens* ; Humans* ; Mesenchymal Stromal Cells* ; Umbilical Cord*