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. 2010 Jun 14;4(4):223–229. doi: 10.1111/j.1750-2659.2010.00142.x

Table 3.

 Proportion of students and teachers observed to be wearing facemasks by class and grade

Grade Week 1 Week 2
# of classes observed Teachers wearing mask Proportion of students wearing mask # of classes observed Teachers wearing mask Proportion of students wearing mask
All students
(19 classes) 18 63% (7/11) 30% (119/391) 14 38% (6/16) 15% (46/310)
Kindergarten
(3 classes) 2 Rm A 0
Rm B 0
Rm C n/o* Rm A 95%
Rm B 0
Rm C n/o 1 Rm A n/o
Rm B n/o
Rm C 0 Rm A n/o
RmB n/o
RmC 0
First
(2 classes) 2 Rm A 1
Rm B 1 Combined 75% 2 Rm A 1
Rm B 0 Rm A 59%
Rm B 0
Second
(4 classes) 4 Rm A n/o
Rm B n/o
Rm C n/o
Rm D 1 Rm A 0
Rm B 0
Rm C 45%
Rm D 100% 3 Rm A 0
Rm B 0
Rm C 1
Rm D n/o Rm A 0
Rm B 0
Rm C 24%
Rm D n/o
Third
(2 classes) 2 Rm A n/o
Rm B 1 Rm A 0 (recess) 
Rm B 0 (lunch) 2 Rm A 1
Rm B 1 Rm A 43%
Rm B 0 (recess)
Fourth
(2 classes) 2 Rm A n/o
Rm B n/o Rm A 0
Rm B 0 2 Rm A 0
Rm B 0 Rm A 0
Rm B 0
Fifth
(3 classes) 3 Rm A 0
Rm B 1
Rm C 1 Rm A 11%
Rm B 53%
Rm C 8% 3 Rm A 0
Rm B 0
Rm C 1 Rm A 0
Rm B 0
Rm C 12%
Sixth
(3 classes) 3 Rm A 0
Rm B n/o
Rm C 1 Rm A 0
Rm B 0
Rm C 37% 1 Rm A 0
Rm B 0
Rm C 1 Rm A n/o
Rm B n/o
Rm C 46%

n/o, not observed.