Importance of reducing pollution, by age


Age (years)	Girls	Boys	All students
	average score on 1,000
8	804	767	787
9	774	747	761
10	758	719	739
11	728	680	705
12	711	649	680
13	700	637	668
14	664	583	623
15	608	511	562
16	618	520	567
17	608	516	566
18	643	559	597
19	762	656	709
Source: Statistics Canada, Census at School, 2009/2010.