Main school -  South Wing KS3 form base  - Yr 7 / 8 / 9 Tetherdown Muswell Hill  London N10 1NE  Tel: 020 8365 4400  Fax: 020 8444 7822 southwing@fortismere.haringey.sch.uk  North Wing - KS4 form base -  Yr 10 / 11 Creighton Avenue  Muswell Hill  London N10 1NS    northwing@fortismere.haringey.sch.uk  Sixth Form -Yr 12 / 13 Tetherdown Muswell Hill  London N10 1NE  Tel: 020 8365 4453  Fax: 020 8442 1790 sixthform@fortismere.haringey.sch.uk  Comments on this website can be sent to: webfeedback@fortismere.haringey.sch.uk Map: Map of school area (Offsite link)