Very slow moving and puzzling look at how adolescents deal with the grief they experience due to the suicide of their teacher. Their replacement teacher, Mr. Lazhar, is a puzzle in that we are not told enough about his background to enable us to relate to his condition or circumstances. Further, his ability to understand and respond to the emotional and psychological needs of the students seems inadequate. He is a weak character who allows himself to be "pushed" around by the other teachers and the principal.
In sum, the film tackles an important and difficult subject, but does so with only minimal success. Only the final few scenes begin to address the real emotions the students experience. The viewer leaves feeling as though many of their feelings were never communicated or addressed.