pɹˈaɪɚ tə nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈoːɹ ɪts ɡɹˈeɪd stɹˈʌktʃɚ kəmpɹˈaɪzd ɡɹˈeɪdz ˈeɪt dˈæʃ tˈɛn; ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈoːɹ dˈæʃ sˈɛvənti fˈaɪv ɡɹˈeɪd ɪlˈɛvən wʌz ˈædᵻd, ænd ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈaɪv dˈæʃ sˈɛvənti sˈɪks ɡɹˈeɪd twˈɛlv wʌz ˈædᵻd.
Prior to 1974 its grade structure comprised Grades 8-10; in 1974-75 Grade 11 was added, and in 1975-76 Grade 12 was added.