Ajayi Crowther Memorial Senior Grammar School was founded in February 1983. Its progress and development have been as a result of the visionary leadership of the intellectual 8 Principals with oversight of the school since its inception.

An all-boys environmentally friendly institution, the school thrives on sound academic, moral and social principles with zero tolerance to indiscipline and anti-social vices attested to by the various awards the school has received over the years. The school is the one to beat in Education District 11 and one of the best in Lagos State.