Kalvi International Public School, Madurai

• A Level

  Last 2 years of school · Ages 16–18

  The British university-entrance qualification: usually 3–4 subjects studied in depth for two years; UK universities make offers on these grades.

• AS Level

  1 year (age 16–17) · Ages 16–17

  Roughly the first year of an A Level, taken as a stand-alone qualification or to add a subject.

• IGCSE

  Ages 14–16, 2 years · Ages 14–16

  A subject-by-subject qualification taken around age 16 in British-style schools — usually 5–10 subjects studied over two years.

• IMYC

  Middle years · Ages 11–14

  The International Middle Years Curriculum: six-week themes that link subjects, often leading on to IGCSE.

• Montessori

  Early years to primary · Ages 2–12

  A method where children choose hands-on activities and work at their own pace, often in mixed-age classes.

Ages are the usual bands; schools can differ.Curriculum basics guide