To Sir, with Love II

Mark Thackeray (Sidney Poitier), from British Guiana by way of California, took a teaching position in a London East End school in the 1967 film. He spent twenty years teaching and ten in administrative roles. He has taught the children of his former pupils, and is now retiring.

Thackeray's former students, Pamela Dare and Barbara Pegg (Judy Geeson and Lulu reprising their roles from the original film), come to the farewell party. Thackeray announces that he is leaving for an inner-city school in Chicago where he will teach again. In Chicago, he meets his former colleague Horace Weaver (Daniel J. Travanti) who is the principal of the school. Thackeray learns that there is an A class with good students and an H (for "horror") class for the "no-gooders". He convinces the principal to let him take the H class as, in his own admission, that is what he does best. His new pupils are noisy, unruly and engaged in destructive behaviours. As he did in London, he starts by teaching them respect for others. He addresses the pupils as Mr or Miss and their last names, and expects to be called Mr. Thackeray or Sir by them in return.

Gradually, he learns their personal stories: Wilsie (Christian Payton) is a gang leader who protects his younger brother. A black female battles against double prejudice. Evie (Dana Eskelson) hides growing up without parents to avoid being fostered. A fellow teacher, Louisa Rodriguez (Saundra Santiago) admires him.

It is revealed that as a teenager in British Guiana, Thackeray fell in love with a girl from Chicago. They lost contact and he went to Britain to study, became a teacher, and got married. Now a widower, Thackeray took this teaching opportunity hoping to find his earlier love.

At the new school, he sets out to teach the troubled students their true potential by taking their fates in their hands. He teaches about the non-violent resistance of the historic fighters of civil rights. When he discovers Wilsie smuggling a gun into the school, he confronts him and convinces him to yield the weapon and he delivers it to the police as a found object.

Later, the police pressure him to reveal the identity of the gun owner because the gun had been used to kill a police officer. He refuses and has to leave the school.

Evie, who works at a newspaper, investigates Thackeray's old love, Emily Taylor (Cheryl Lynn Bruce). Evie arranges for him to meet Taylor, and also meets her son. Thackeray learns that Taylor returned his affections, but her father kept Thackeray's letters from her because she was pregnant with Thackeray's son.

Thackeray learns that Wilsie is hiding because he thinks that the police are after him. He convinces Wilsie's brother to take him to the hiding place. Thackeray convinces Wilsie to give up violent gang life. After he confronts a rival gang looking for Wilsie, Wilsie and a friend with access to more firearms turn themselves in to the police.

The pupils stage a "stand in" to force the principal to reinstate their beloved teacher.

The term ends with a graduation ceremony and dance. Thackeray announces that he is not returning to Britain but staying in Chicago to teach the new generation.

• To Sir, with Love II at IMDb