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Historical Grade Boundaries

SL Theatre

SL

HL

SL Theatre
Boundary*	Markband (≥)
Boundary*	1	2	3	4	5	6	7
Average	0.0	8.8	18.8	31.5	48.6	65.5	82.0
SD	0.0	1.2	2.2	3.9	3.0	3.1	2.5
N25 TZ0	0	10	20	36	53	69	85
M25 TZ0	0	10	20	36	52	70	86
N24 TZ0	0	10	20	35	51	67	84
M24 TZ0	0	10	20	35	51	69	85
N23 TZ0	0	9	20	31	48	65	81
M23 TZ0	0	9	20	31	48	65	81
N22 TZ0	0	7	17	32	48	65	81
M22 TZ0	0	7	17	26	45	62	79
M21 TZ0	0	7	13	23	42	59	78
N20 TZ0	0	9	20	31	49	65	81
M19 TZ0	0	9	20	31	48	65	81

HL Theatre
Boundary*	Markband (≥)
Boundary*	1	2	3	4	5	6	7
Average	0.0	9.4	19.9	33.3	49.3	65.6	81.9
SD	0.0	1.0	2.1	3.0	2.6	2.0	1.6
N25 TZ0	0	10	21	37	52	68	83
M25 TZ0	0	10	21	37	52	69	84
N24 TZ0	0	10	21	36	53	67	84
M24 TZ0	0	10	21	36	51	68	83
N23 TZ0	0	10	21	33	49	65	82
M23 TZ0	0	10	21	33	49	65	82
N22 TZ0	0	8	18	33	49	66	81
M22 TZ0	0	8	18	30	46	63	79
M21 TZ0	0	7	14	26	43	62	79
N20 TZ0	0	10	21	33	50	64	82
N19 TZ0	0	10	21	33	49	65	82
M19 TZ0	0	10	21	33	49	65	82

TZ0: Worldwide • TZ1: Americas • TZ2: Europe, Africa, Asia-Pac

COVID Trend: N20–N22 boundaries were artificially lower than standard cycles.

Syllabus: Beware of using outdated boundaries for updated subject syllabuses.

Regional Trends: TZ2 generally has higher boundaries than TZ1; ensure your timezone is correct.

Session Trends: November boundaries tend to be higher than May. Compare cycles carefully.