xposted to IJ
Because it drives me nuts I'm so bad at Hogwarts Math.

Born between	Hogwarts years
Sept ’83 – August ’84	1995-2002
Sept ’82 – August ’83	1994-2001
Sept ’81 – August ’82	1993-2000
Sept ’80 – August ’81	1992-99
Sept ’79 – August ’80	1991-98***
Sept ’78 – August ’79	1990-97
Sept ’77 – August ’78	1989-96
Sept ’76 – August ’77	1988-95
Sept ’75 – August ’76	1987-94
Sept ’74 – August ’75	1986-93
Sept ’73 – August ’74	1985-92
Sept ’72 – August ’73	1984-91
Sept ’71 – August ’72	1983-90
Sept ’70 – August ’71	1982-89*
Sept ’69 – August ’70	1981-88
Sept ’68 – August ’69	1980-87
Sept ’67 – August ’68	1979-86
Sept ’66 – August ’67	1978-85
Sept ’65 – August ’66	1977-84
Sept ’64 – August ’65	1976-83
Sept ’63 – August ’64	1975-82
Sept ’62 – August ’63	1974-81
Sept ’61 – August ’62	1973-80
Sept ’60 – August ’61	1972-79
Sept ’59 – August ’60	1971-78**
Sept ’58 – August ’59	1970-77
Sept ’57 – August ’58	1969-76
Sept ’56 – August ’57	1968-75
Sept ’55 – August ’56	1967-74
Sept ’54 – August ’55	1966-73
Sept ’53 – August ’54	1965-72
Sept ’52 – August ’53	1964-71
Sept ’51 – August ’52	1963-70
Sept ’50 – August ’51	1962-69

* Bill Weasley's years at school
** Canonically James and Lily's years at school given their birthdates.
*** Trio Year