The Sixth Form at GMS is the place of choice for the majority of the school’s Year 11 students and it welcomes students from other schools, too. Applications forms are posted in the autumn term of Year 11 and are submitted before Christmas. GMS offers the only T-level Level 3 Technical Qualification in Childcare and Education, in the local area. The school’s BTEC courses are very popular as an alternative post-16 route to employment. If A-levels are a student’s choice, there is a wide range of genres to select from: humanities, science, social science, sports’ science, creative arts and modern foreign languages. Altogether 29 different post-16 courses are available.

The Sixth Form Centre was purpose built. The facilities include a spacious communal area, which has social seating, work desks, Wifi, and portals to plug in laptops. The mezzanine area provides alternative study space. A silent study room allows students to focus on their work without interruption. Outside, there is a patio area, which is popular in the summer months. A café serves a selection of food choices throughout the day.