Under the impact of the COVID 19 pandemic, it is a must for education institutes all over the world to incorporate online teaching into their teaching program. In Vietnam, high school teachers and students are now familiar with blended teaching in which students will learn from at least 30% of their lessons online and 70% face-to-face. This research aims at investigating Vietnamese high school students’ perceptions toward the benefits and challenges of blended teaching. Two research questions will be answered (1) “What are high school students’ perceptions toward the benefits of blended teaching?” and (2) “What are high school students’ perceptions toward the challenges of blended teaching?”. There were 200 sciences students (72 participants majoring in Physics, 60 in Chemistry, and 68 in Biology) from 3 high schools for the gifted in Vietnam who participated in the study. The results of the research show that the majority of participants agreed on the benefits and challenges of blended teaching in the context of high school for the gifted in Vietnam. The current study suggests that teachers should have an effective lecture design to help their students acquire science knowledge better in blended classes.

Keywords: blended teaching, perceptions, science students, high school for the gifted