учеников

учеников

"учеников" means "students" (genitive plural form) in English.

In this case, 'учеников' (students) is in the plural genitive form used after numerals to quantify entities.

На уроке присутствовали десять учеников.

Ten students attended the lesson.

Here, 'ученики' (students) is used in the nominative plural form as the subject of the sentence indicating who is participating.

Все ученики школы участвовали в соревновании.

All students of the school participated in the competition.

Here, 'учеников' (students) is the plural form in the genitive case used to indicate possession, referring to the students being taught by the teacher.

Учитель отметил достижения своих учеников.

The teacher noted the achievements of his students.