The theme central to the novel is

The central theme of The Lekki Headmaster is the challenges of migration and identity. The entire narrative is built around Mr Bepo's struggle with the decision to leave Nigeria for the United Kingdom, and the novel uses this personal journey to examine how migration reshapes individual identity and disrupts the communities people leave behind.

While the novel touches on other issues such as the state of Nigerian education and cultural values, these are explored as dimensions of the overarching migration-and-identity theme rather than as independent central themes. The challenges of migration, including bureaucratic hurdles, family pressure, emotional attachment to home, and the fear of losing one's cultural roots, drive every major plot development. Identity is woven into this because Bepo must decide whether he is fundamentally a Nigerian educator or someone who can reinvent himself in a new country. The novel argues that this question of identity is what makes the migration decision so difficult and so consequential.