Secretary for Education Christine Choi said officials will follow up on the incident.
A video circulating online purportedly showed the coach, Yung Kam-wah, holding the hand of a student and forcing him to slap himself in front of other youngsters.
Writing on social media, Yung, who is also a former SAR basketball team player, apologised to the student.
He admitted he should not have penalised anyone in this way under any circumstances.
Yung said he would deeply reflect on the matter and promised not to repeat the mistake, noting that the incident caused discomfort and harm to the students.
He also said he would cooperate with all investigations.
In a statement, the incorporated management committee of Hon Wah College said the incident happened during 2023/2024 academic year.
The committee said it has suspended the duties of Yung and launched an investigation.
The police have been notified as well.
The committee added that it has reached out to the affected student and arranged assistance.
The school has issued a letter to all parents, offering assistance and support to students in need.
Speaking to reporters, Choi said the Education Bureau attaches great importance to the incident and contacted the school immediately after the incident came to light.
“We will also strictly follow up on the matter, and request the school to submit a report as soon as possible to give a detailed account of the incident,” she said.
“We will also keep close contact with the school to provide appropriate assistance.”
Choi added that the bureau offers guidelines to schools on teachers’ conduct and the management of coaches who are hired externally.
She made it clear the welfare of students should always be the top priority.
