The Student (2016) on Netflix

Plot summary

Veniamin Yuzhin's parents have divorced and his father has disappeared. He lives in suburban Russia with his mother, Inga Yuzhina, who works three jobs to support them. Veniamin begins reading a miniature Bible selectively, quoting passages aloud in class, and his mother is repeatedly summoned to the principal's office. When he protests the girls wearing bikinis in physical education, the principal, Lyudmila Stukalina, backs him and calls for a school code requiring one-piece swimsuits. A classmate, Grigoriy Zaytsev, who walks with a congenital limp, befriends him. In biology, teacher Elena Krasnova demonstrates condom use with carrots, and Veniamin strips in class to protest; the principal reprimands her.