The school offers educational opportunities for girls and boys from three months to eighteen years of age.

Bursaries are available to help students take up or retain a place at the school where their parents or guardian cannot pay full fees.

Bursaries typically support between 70 and 80 pupils each year and are overseen by the Birkenhead School Foundation Trust.

[2] In addition to bursaries the school offers: Academic and Music Scholarships for entry into Year 6 in recognition of outstanding potential; Honorary Academic Sixth Form Scholarships for outstanding GCSE results; Access Scholarships for those entering the Sixth Form with outstanding GCSE results from other schools who would otherwise not be able to access a Birkenhead School education.

During 1899 the ground alongside Beresford Road was leveled to create the school's playing field.

These included the original "big school" dating back to 1871, and the recently closed boarding house which at its peak had catered for over forty boarders.

In conjunction with Oxton Sports Club, an all-weather pitch was completed on the McAllester Field site, and also in 1992 the Preparatory Department's purpose built Little School was opened in Kingsmead Road South.

Building work to support the co-educational future of the school, including additional classrooms on Shrewsbury Road and an extension to the Sports Pavilion at McAllester Field to provide female changing facilities, was completed in 2009.

Membership was compulsory until 2006 for pupils of the fourth form onwards, but it then became an entirely voluntary after-school activity until 2015 when declining numbers caused its disbandment.

Under this scheme it received a subsidy from the local education authority allowing fees to be based on the ability to pay, with some places being free.

[6] Plans were published in 2020 to sell Noctorum Field to provide enhanced sports facilities on the campus, to assist two local rugby clubs and to fund additional bursaries.