Another 10% of students with a high score of English language competency, the main problem is that opinion is that vocabulary because students do not know what term to use to fit the situation.
Another 10% of the students scored high English proficiency. Noted that the main problem is the terminology, because students do not know how to use this term to fit the situation.
Student 10% scores in English high comments that the main problem is the vocabulary, since the students don't know will choose to use vocabulary words to suit the situation.