Homework does not ensure that students practise what they are taught at school. Teachers often give pupils the end of the exercise they were doing in class to complete at home, it tends to be the harder questions towards the end of the exercise and if a teacher or a tutor is not present to explain or help then it causes the pupil to doubt their ability. To practise what a student has been taught requires the presence of a teacher or tutor who can guide the student if they get something wrong. Homework, done by the student on their own, offers little support and is only a source of stress. If confused, the student may only come to dislike the topic or subject, which will only further reduce their ability to remember what they were taught.