The Monthly Film Bulletin wrote: "There is one shot in
To Sir, With Love that shows Sidney Poitier staring into the sun through the window of his empty classroom with his arms spread out along the sill; in silhouette he looks for a second like Christ on the cross. The effect is almost certainly unintentional, but everything about James Clavell's sententious script ... suggests that he sees his hero as a Saviour figure, nobly sacrificing his own chance of middle-class respectability in order to redeem younger unfortunates from their hereditary taint of bad grammar and colourful language. Buttoned inside his immaculate white collars, Thackeray bravely shoulders the black man's burden, emitting a sanctimonious wince when confronted with any sign of moral weakness in others .... His comportment is infuriating, but no more so than the way in which the other characters respond to it. For if the film pretends to social realism by its frequent allusions to race prejudice, broken homes, ill-equipped classrooms and so on, its solutions have all the facile optimism of the most utopian folksongs. Thackeray's students all have hearts of gold, all aspire to self-improvement, all want "Sir" to approve of them. With scarcely a pimple or a genuine adolescent problem between them (there are no wallflowers at this school dance) they are all swept along to respectability on a great tidal wave of saccharine sentiment. Even the staff are moved by Thackeray's charismatic spell to a new sense of brotherhood. ... Nonetheless, within the limits imposed by the pious script, unimaginative photography and wooden direction, Christian Roberts and Lulu provide two very engaging performances." Upon its U.S. release,
Bosley Crowther began his review by contrasting the film with Poitier's role and performance in the 1955 film
Blackboard Jungle; unlike that earlier film, Crowther says "a nice air of gentility suffuses this pretty color film, and Mr. Poitier gives a quaint example of being proper and turning the other cheek. Although he controls himself with difficulty in some of his confrontations with his class, and even flares up on one occasion, he never acts like a boor, the way one of his fellow teachers (played by
Geoffrey Bayldon) does. Except for a few barbed comments by the latter, there is little intrusion of or discussion about the issue of race: It is as discreetly played down as are many other probable tensions in this school.
To Sir, with Love comes off as a cozy, good-humored and unbelievable little tale." ''
Halliwell's Film and Video Guide describes it as "sentimental non-realism" and quotes a Monthly Film Bulletin'' review (possibly contemporary with its British release), which claims that "the sententious script sounds as if it has been written by a zealous Sunday school teacher after a particularly exhilarating boycott of South African oranges". The
Time Out Film Guide says that it "bears no resemblance to school life as we know it" and the "hoodlums' miraculous reformation a week before the end of term (thanks to teacher Poitier) is laughable". Although agreeing with the claims about the film's sentimentality, and giving it a mediocre rating, the
Virgin Film Guide asserts: "What makes [this] such an enjoyable film is the mythic nature of Poitier's character. He manages to come across as a real person, while simultaneously embodying everything there is to know about morality, respect and integrity." The novel's author, E.R. Braithwaite, loathed the film, particularly because of its omission of the novel's interracial relationship, although it provided Braithwaite with some financial security from royalties.
To Sir, with Love holds an 89% "Fresh" rating on the
review aggregate website
Rotten Tomatoes based on 28 reviews. The film grossed $42,432,803 at the box office in the
United States, yielding $19,100,000 in rentals, on a $640,000 budget, In 2007, taking liberties with the underpinnings of the
Magical Negro tropewhich is based on a black actor, in an American film, who is not the lead character, unlike lead actor Poitier in this British film
Los Angeles Times critic
David Ehrenstein accused Poitier of fulfilling the trope due to the character of teacher Mark Thackeray's service as the sounding board and voice of reason for the white students (further ignoring the presence of non-white characters amongst the students). In
Entertainment Weeklys 2025 list of "50 Best High School Movies",
To Sir, with Love was ranked at number 25. == Soundtrack ==