Considering each item, the students agreed that learning English vocabulary by guessing meaning from the context clues via web-based instruction is modern, with the highest means average 4.42. They agreed that learning via web-based instruction is useful, with the means average 4.30. They also agreed that learning via web-based instruction is convenient to learn since a person can review the lessons anywhere and anytime ( X = 4.25), learning via web-based instruction is a way to enhance their self-directed learning ( X = 4.18), and this way of learning can help them remember more new vocabulary ( X = 4.05). The students agreed that learning via web-based instruction is enjoyable with the means average 3.98 and easy to understand the lessons with the means average 3.85. They agreed that learning English vocabulary by guessing meaning from the context clues via web-based instruction has clear explanations of contents and exercises with the means average 3.72. The students expressed that learning English vocabulary by guessing meaning from the context clues via web-based instruction doesn’t make them feel isolated or alone with the lowest means average 3.55.