This study utilized a quasi-experimental research design; it aimed to determine the effect of lecture, video and pamphlet on the knowledge regarding teenage pregnancy among junior high school students in selected public schools in Zamboanga City through pre and post intervention evaluation. A total of 300 respondents were included, male and female junior high school students, aged 13-19 years old and currently enrolled and studying in the 2 most populous public junior high schools in the city. Using multi-stage and simple random sampling, 200 respondents were drawn from Zamboanga National High School West while 100 respondents were from Zamboanga City High School Main. Pretest questionnaires were given to determine their baseline knowledge on teenage pregnancy. 3 different educational interventions were then conducted, a lecture for 100 respondents from ZNHS West, a video-viewing for the other 100 respondents from the same school and pamphlet-reading for the 100 respondents from ZCHS Main. Their knowledge after the interventions were evaluated and compared with that of the baseline. Results revealed that the junior high school students of selected public schools in Zamboanga City have poor knowledge regarding teenage pregnancy with an average score of 9.04 out of a 25-item pre-intervention exam and an equivalent average of 36.16%. However, significant change in the knowledge of the respondents from before the interventions to after was observed. For the lecture intervention, the mean scores were 8.96 to 10.25 with p value 0.000, which is a significant difference. For the video intervention, the mean scores were 9.53 to 10.33 with p value 0.011, still a significant difference. And for the pamphlet intervention, the mean scores were 8.63 to 10.37 with p value 0.000, also a significant difference. It can be stated then, that effective teaching as well as the use of suitable strategies can positively affect and increase knowledge. Despite this significant change, all the post-test scores still failed to reach the passing mark of 13 or 50%, making the students’ post intervention knowledge still poor. As for the strategies used, the difference in the knowledge among the 3 educational interventions (lecture, video and pamphlet) was not significant and was very minimal. As seen in the post test-test mean scores, Lecture – 10.25, Video – 10.33 and Pamphlet – 10.37. The difference between the interventions ranged from -0.12 up to 0.08 only. The pamphlet intervention scored higher than the 2 other interventions. Further analysis of the respondents’ knowledge regarding teenage pregnancy across the 3 intervention groups when the data were grouped together, yielded a p value of 0.9737 indicating that indeed no significant differences were noted among them and that the knowledge of the 3 intervention groups were most likely similar after the intervention. A similar study should be conducted on regular junior high school students as respondents, since the students in this study were remedial learners.  

Keyword: Lecure, video, and pamphlet Teenage pregnancy Junior high school students