Former students of Ngee Ann Polytechnic engineering lecturer Tan Boon Lee have accused him of racially and religiously insensitive behaviour in the classroom.
One of them, Ms Nurul Fatimah Iskandar, 22, said in an Instagram post on Wednesday that Mr Tan had initiated an offensive discussion about Islam during lesson time, when she was his student about four years ago.
She told The Straits Times yesterday: "He opened websites about Islam and explained why he didn't agree with certain Quranic verses. He then singled me out, and tried to start a debate on the topic. It didn't help that I was the only Muslim student in class and I sat in the front row."
Asked about Ms Nurul's allegations, Mr Tan declined to comment "at the moment" but said he remembers her as a former student.
The polytechnic told The Straits Times last night that it was aware of the allegations against Mr Tan and deeply regrets Ms Nurul's experience. It added that it has a zero tolerance approach on any form of misconduct by members of its community. "Our staff members are expected to respect cultural, ethnic and religious differences when interacting with students and other staff members," a spokesman for the poly said.
Second Minister for Education Maliki Osman also addressed Ms Nurul's post, saying he was "shocked and disappointed" to hear about Mr Tan sharing his "personal and derogatory views on Islam".
"There is no place for any anti-ethnic and anti-religious remarks in our education institutions, and even more so from an educator," Dr Maliki said in a post on Facebook last night.
He said the Education Ministry and educational institutions here have a zero tolerance stance on any behaviour or remark that is intentionally insensitive and derogatory to any race or religion. "All our educators are expected to uphold the Code of Conduct set out by their institutions, which states clearly that they must uphold secularity and impartiality at all times," he added.
Mr Tan, 60, is assisting the police with investigations after he was filmed making racist remarks to ice cream store owner Dave Parkash, 26, and his girlfriend Jacqueline Ho, 27, a user experience designer, in Orchard Road last Saturday night.
The polytechnic has suspended him from teaching duties and is conducting an internal investigation after a video of the incident surfaced online on Sunday.
In its statement last night, the polytechnic added that it would not hesitate to take disciplinary actions against Mr Tan, including dismissal if appropriate.
Ms Nurul, who is now an electrical engineering student at the National University of Singapore, said the incident involving Mr Tan happened in July 2017.
She was a second-year electrical engineering student at the polytechnic at the time.
She said: "I remember being so affected by it that I sat outside the classroom with a friend waiting for him to finish talking."
She nearly stopped going for his classes after that, but decided not to because it was too close to the final examinations.
Ms Nurul said the experience in Mr Tan's class was difficult for her.
"I was only 18 then, and was still fresh out of the madrasah... Being singled out like that was very jarring for me," she added.
Ms Nurul said it was tough for her to speak up against her lecturer, as she was afraid that her scholarship would be at stake if things went badly. "After all, I'm still being graded by the same lecturer so I felt it was wiser not to say anything about it," she said.
"And being the only minority in class, it's very hard for me to speak out, and it is just as difficult for fellow classmates to back me up in case anything goes wrong. Also, I've grown up with the mindset that I shouldn't cause any trouble," she added.
Ms Nurul finally mustered the courage to send an e-mail to the school about what happened. She never got a response, she said.
Since she put up the post about the incident on Instagram, Ms Nurul said more accounts about Mr Tan from other students have come to her attention.
One Instagram user alleged that Mr Tan once made disparaging comments about Christianity in class, causing outrage among the students.
Another alleged that the lecturer had made her take off her hijab. "The hijab that I am proud of wearing became something that I felt ashamed of when he was around," the user wrote.
In her Instagram post, Ms Nurul said Mr Tan should not be allowed back in the classroom again because a "racist Islamophobe has no place educating our youth".
She wrote: "It is not enough to be anti-racist, it is not enough to be neutral. We need more people to step up, stand up and speak up against racism."
Former Ang Mo Kio GRC MP Intan Azura Mokhtar addressed Mr Tan's racist remarks and educators' role in making classrooms inclusive in a Facebook post yesterday.
"We demonstrate values that our students observe and learn from, and which are likely to rub off and shape their worldviews or actions," said the Singapore Institute of Technology assistant professor.
National Institute of Education don Jason Tan said while it is important for teachers to be able to conduct discussions on difficult issues like race and religion, they must do so with basic respect.
"The first step is for them to confront their own biases and prejudices," he said. "What happens in classrooms shapes student's values, attitudes and behaviour. Educators have a heavy responsibility thrust upon them."