Ruling on students standing up for the teacher
Question

                It is customary when the teacher enters the classroom for the students to stand up as a sign of respect, and the teachers tell them to do that. Some teachers punish a student who does not stand up for them, and that is regarded as a kind of bad manners. What is the ruling on that?.
Praise be to Allah.
    We have already discussed the ruling on standing up for one 
    who comes in, in question no.
    34497. This 
    ruling includes students standing up for the teacher. 

    Shaykh ‘Abd al-‘Azeez ibn Baaz (may Allaah have mercy on him) 
    said: 

    I have heard that many teachers tell the students to stand up 
    for them when they enter the classroom. Undoubtedly this goes against the 
    saheeh Sunnah. 

    It was proven that the Messenger of Allaah  (peace and 
    blessings of Allaah be upon him) said: “Whoever likes the people to stand up 
    for him, let him take his place in Hell.” Narrated by Imam Ahmad, Abu Dawood 
    and al-Tirmidhi from Mu’aawiyah (may Allaah be pleased with him) with a 
    saheeh isnaad. Imam Ahmad and al-Tirmidhi also narrated with a saheeh isnaad 
    from Anas (may Allaah be pleased with him): “No person was dearer to them 
    than the Prophet  (peace and blessings of Allaah be upon him), but when 
    they saw him they did not stand up for him because they knew that he 
    disliked that.”  

    So the Sunnah is not to stand up for teachers when they enter 
    classrooms, in accordance with these two hadeeth and other similar reports. 

    It is not permissible for the teacher to tell them to stand 
    up for him, because of the warning mentioned concerning that in the hadeeth 
    of Mu’aawiyah, and it is makrooh for the students to stand up, because of 
    the hadeeth of Anas quoted above.  It is well known that all goodness is to 
    be found in following the Sunnah of the Messenger of Allaah  (peace and 
    blessings of Allaah be upon him) and following his example and that of his 
    companions (may Allaah be pleased with them). May Allaah make us and you 
    among those who follow him in truth and help us to understand His religion 
    and adhere steadfastly to it. 

    Majallat al-Buhooth al-Islamiyyah, 
    26/347.