School House Corner, Road curve on A3 Lezayre Road in Ramsey, Isle of Man

School House Corner is a left-hand bend on the A3 Lezayre Road in Lezayre, between the 23rd and 24th milestones of the Snaefell Mountain Course. Riders reach it after holding full throttle for about a kilometre from the Milntown Cottage bends, and the uneven surface pushes both solos and sidecars towards the outside of the curve. A footbridge before the corner serves as a braking marker.

The corner was named after Benjamin Russell, who died in 1947 during the Lightweight race of the Manx Grand Prix. This naming reflects the hazardous nature of the historic racing course.

The corner's name comes from the nearby Ramsey Grammar School, and before that it was called Crossags, after Crossags Lane. A permanent footbridge lets pupils cross between the schools' sports fields. The corner was briefly known as Russell's Corner after Benjy Russell, an amateur who died here in the 1947 Manx Grand Prix; the name fell out of use.

The corner has an open bus lane at its exit that requires careful attention from drivers. This feature combined with the natural tendency to drift wide makes it a tricky passage to navigate.

All fatal accidents at School House Corner involved amateurs in the Manx Grand Prix: Benjy Russell on a Moto Guzzi Albatros in 1947, Kevin Howe on a Honda VFR 750 in 1990 and Phil Hayhurst on a 125 cc Yamaha in 2002. Sidecar racer Dave Saville never took the ideal line here, staying mid-road because the surface was better.